diff --git a/_test_simple.ifc b/_test_simple.ifc
index d2e5ded..6bdab03 100644
--- a/_test_simple.ifc
+++ b/_test_simple.ifc
@@ -3297,13 +3297,6 @@ DATA;
 #3959=IFCTASK('3qCZPJwGX8mO7w79yyYUOv',$,'Install Eaves and Gutters',$,$,'P5.1',$,$,$,.F.,$,#3979,.CONSTRUCTION.);
 #3960=IFCRELNESTS('0v8zh2Ih99GhpudWVkFwzd',$,$,$,#3949,(#3959,#3961,#4935,#4936,#4937,#7786,#7787));
 #3961=IFCTASK('2t8ODJP_TDbupmWFfWUiez',$,'Install Floor Covering',$,$,'P5.2',$,$,$,.F.,$,#3980,.CONSTRUCTION.);
-#3962=IFCRELASSIGNSTOPROCESS('2Jmh_L6zH3v9lLD9L2mdXM',$,$,$,(#2530,#2584,#2637,#2690),$,#3950,$);
-#3963=IFCRELASSIGNSTOPROCESS('16N2HwfPH6tupu3pdTkUlY',$,$,$,(#3125),$,#3952,$);
-#3964=IFCRELASSIGNSTOPROCESS('1Fzqr7iBz4L9xyNiZyTJGz',$,$,$,(#111,#1316,#1664,#2173),$,#3953,$);
-#3965=IFCRELASSIGNSTOPROCESS('1lhxYL5jH5juiyOh$ZOCtg',$,$,$,(#3241,#3343,#5284,#6192),$,#3955,$);
-#3966=IFCRELASSIGNSTOPROCESS('04mpLTV4L6Xeu9GgWdXvrI',$,$,$,(#299,#647,#1245,#1459,#1593,#1742,#2081,#2251,#2332,#5898,#6627,#6628,#6629,#6630),$,#3957,$);
-#3967=IFCRELASSIGNSTOPROCESS('1nuupdZRD6I9$I8xqbnhpW',$,$,$,(#2798,#2900,#2925,#2973,#2848,#2949),$,#3959,$);
-#3968=IFCRELASSIGNSTOPROCESS('14w$CYP510xudcpVBnZUn8',$,$,$,(#3048),$,#3961,$);
 #3969=IFCRELSEQUENCE('1Eie02rhH3Ket6S3RWMgju',$,$,$,#3950,#3952,$,.FINISH_START.,$);
 #3970=IFCRELSEQUENCE('11GFsFvz1F1fjd2dYSy55R',$,$,$,#3944,#3946,$,.FINISH_START.,$);
 #3971=IFCRELSEQUENCE('3xY4xKf1H8kuZJIwHffDko',$,$,$,#3946,#3947,$,.FINISH_START.,$);
@@ -3921,7 +3914,6 @@ DATA;
 #4927=IFCTASKTIME($,$,$,$,'P1D','2026-03-23T09:00:00','2026-03-23T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
 #4928=IFCCOSTITEM('2$yTsuB79BIemTR0GvmhPk',$,'Entrance Door',$,$,'F.1',$,(#4933),(#4932));
 #4929=IFCRELNESTS('0bpe3L2SrELhYdyWZ$lVJm',$,$,$,#4925,(#4928,#5452,#8829));
-#4930=IFCRELASSIGNSTOPROCESS('3e9DfFJeL35f7PhhiIL9mI',$,$,$,(#4811),$,#4926,$);
 #4931=IFCRELASSIGNSTOCONTROL('0PmqIUQHjAQuu$WiGZPSKX',$,$,$,(#4811),$,#4928);
 #4932=IFCQUANTITYCOUNT('Unnamed',$,$,1.,$);
 #4933=IFCCOSTVALUE($,$,IFCMONETARYMEASURE(750.),$,$,$,$,$,$,$);
@@ -3934,9 +3926,6 @@ DATA;
 #4940=IFCTASKTIME($,$,$,$,'P1D','2026-03-30T09:00:00','2026-03-30T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
 #4941=IFCTASKTIME($,$,$,$,'P1D','2026-03-30T09:00:00','2026-03-30T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
 #4942=IFCTASKTIME($,$,$,$,'P1D','2026-03-31T09:00:00','2026-03-31T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
-#4943=IFCRELASSIGNSTOPROCESS('1_lqjBnZjCbO3O4e8It0Xo',$,$,$,(#4285,#4320),$,#4935,$);
-#4944=IFCRELASSIGNSTOPROCESS('1WsUCyHpv0HubUpEFVIE1t',$,$,$,(#4343),$,#4936,$);
-#4945=IFCRELASSIGNSTOPROCESS('2GRbuX2SX8bxMZ1xb2d3X_',$,$,$,(#4034,#4058,#7345,#7346,#7347,#7348,#7349,#7350,#7351,#7352,#7353,#7354),$,#4937,$);
 #4946=IFCCOSTITEM('0$wpOptrT8IwdC5zUOwxmb',$,'Wood Burning Stove',$,$,'G.1',$,(#4963),(#4954));
 #4947=IFCRELNESTS('0p0c6splj42PF66irBh$OB',$,$,$,#4938,(#4946,#4948,#4949,#7796,#7797,#7798,#7799));
 #4948=IFCCOSTITEM('1NMB6a6LL6AfLKX$5$OvJH',$,'Chimney',$,$,'G.2',$,(#4964),(#4956));
@@ -4091,8 +4080,6 @@ DATA;
 #5400=IFCTASK('2AolDq9VX7zhj_$DpFQSeh',$,'Install Lobby Doors',$,$,'P4.3',$,$,$,.F.,$,#5402,.CONSTRUCTION.);
 #5401=IFCTASKTIME($,$,$,$,'P2D','2026-03-23T09:00:00','2026-03-24T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
 #5402=IFCTASKTIME($,$,$,$,'P1D','2026-03-25T09:00:00','2026-03-25T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
-#5403=IFCRELASSIGNSTOPROCESS('2RVZS8qJL4pxbjKY2lA0K1',$,$,$,(#5022,#5047,#5072),$,#5399,$);
-#5404=IFCRELASSIGNSTOPROCESS('3UZ6S64Az2nxcWVfqFyjnj',$,$,$,(#5234,#6076,#6230,#6231),$,#5400,$);
 #5412=IFCELEMENTQUANTITY('2zYi7FHyz9G8l4mCp6tsjb',$,'Qto_OpeningElementBaseQuantities',$,'BaseQuantities',(#5414,#5415,#5416,#5417,#5418));
 #5413=IFCRELDEFINESBYPROPERTIES('29haGnY1b4MORVYwl6$Yd1',$,$,$,(#5243),#5412);
 #5414=IFCQUANTITYAREA('Area',$,$,2.49599990844726,$);
@@ -5306,9 +5293,6 @@ DATA;
 #7788=IFCTASKTIME($,$,$,$,'P3D','2026-03-25T09:00:00','2026-03-27T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
 #7789=IFCTASKTIME($,$,$,$,'P1D','2026-04-01T09:00:00','2026-04-01T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
 #7790=IFCTASKTIME($,$,$,$,'P2D','2026-04-01T09:00:00','2026-04-02T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
-#7791=IFCRELASSIGNSTOPROCESS('2Ysraez8L2xQU0SUbB5uKC',$,$,$,(#5963,#5964,#5965,#5966,#5967),$,#7785,$);
-#7792=IFCRELASSIGNSTOPROCESS('06RpHjs2X1PAdG5_ZyPucv',$,$,$,(#6957,#6958,#6959,#6960),$,#7786,$);
-#7793=IFCRELASSIGNSTOPROCESS('2B_RDLZHTF4xwE_7HPn5Zv',$,$,$,(#5639,#5661,#5662,#5620),$,#7787,$);
 #7794=IFCCOSTITEM('2JtBF2R719Sxe$pdj3T8t$',$,'Extension Internal Walls',$,$,'B.2',$,(#7820),(#7749,#7758));
 #7795=IFCCOSTITEM('1i$1zb6$f9reU3DFiodxQ$',$,'Extension Flat Roof',$,$,'D.5',$,(#7821),(#7680));
 #7796=IFCCOSTITEM('3la3OEi018ueAbZsqu5nmv',$,'WC Toilet',$,$,'F.4',$,(#7822),(#7807));
@@ -6055,9 +6039,6 @@ DATA;
 #9796=IFCRELNESTS('0ZYlDhfeT5qvgq3w4khdXt',$,$,$,#9794,(#9795,#9797,#9798));
 #9797=IFCTASK('1nYXO5tJrC$wMbhWo5Vy7u',$,'Ground Floor Slab',$,$,'P0.2',$,$,$,.F.,$,#9804,.CONSTRUCTION.);
 #9798=IFCTASK('1GXuZQa3P1QBMmFNUKjWjh',$,'Ground Floor Windows and Door',$,$,'P0.3',$,$,$,.F.,$,#9805,.CONSTRUCTION.);
-#9799=IFCRELASSIGNSTOPROCESS('2Q2FGTJcjAUvGWwRWuFOEO',$,$,$,(#9091,#9115,#9139,#9163),$,#9795,$);
-#9800=IFCRELASSIGNSTOPROCESS('3MB32tAE54E809f7Si_W7B',$,$,$,(#9187),$,#9797,$);
-#9801=IFCRELASSIGNSTOPROCESS('19Y7d2cJf2kvYpHy44FEL3',$,$,$,(#9322,#9323,#9700,#10216,#10287,#10358,#10408,#10472,#10522,#10572),$,#9798,$);
 #9802=IFCTASKTIME($,$,$,$,'P15D','2026-02-23T09:00:00','2026-03-13T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
 #9803=IFCTASKTIME($,$,$,$,'P5D','2026-02-23T09:00:00','2026-02-27T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
 #9804=IFCTASKTIME($,$,$,$,'P5D','2026-02-27T09:00:00','2026-03-06T17:00:00',$,$,$,$,$,$,$,$,$,$,$,$,$);
@@ -6805,5 +6786,90 @@ DATA;
 #10934=IFCQUANTITYCOUNT('Unnamed',$,$,1.,$);
 #10935=IFCCOSTVALUE($,$,IFCMONETARYMEASURE(450.),$,$,$,$,$,$,$);
 #10936=IFCCOSTVALUE($,$,IFCMONETARYMEASURE(750.),$,$,$,$,$,$,$);
+#10937=IFCRELASSIGNSTOPRODUCT('23G2c7IhD1Rxj3Szvcnp1J',$,$,$,(#3950),$,#2530);
+#10938=IFCRELASSIGNSTOPRODUCT('1V68DAHXLF58n2DeNS94MW',$,$,$,(#3950),$,#2584);
+#10939=IFCRELASSIGNSTOPRODUCT('2XqG_3aaTBQBOzS3E0nSMC',$,$,$,(#3950),$,#2637);
+#10940=IFCRELASSIGNSTOPRODUCT('35Ulm_JOH6OfqHU$R$f_H$',$,$,$,(#3950),$,#2690);
+#10941=IFCRELASSIGNSTOPRODUCT('1uLL1TlLPDnxVWfViWiffT',$,$,$,(#3952),$,#3125);
+#10942=IFCRELASSIGNSTOPRODUCT('3Gar6GMpj9i8cX5SZlaxep',$,$,$,(#3953),$,#111);
+#10943=IFCRELASSIGNSTOPRODUCT('3I1yeL2Tv0dv1$xMQYFSD_',$,$,$,(#3953),$,#1316);
+#10944=IFCRELASSIGNSTOPRODUCT('0SAhvKkq1DzxUaiCvgwJ7w',$,$,$,(#3953),$,#1664);
+#10945=IFCRELASSIGNSTOPRODUCT('1lUIWnDvH1ThK9YFgq$0bM',$,$,$,(#3953),$,#2173);
+#10946=IFCRELASSIGNSTOPRODUCT('0ufAx8W7HEjO5GhIhTUGTq',$,$,$,(#3955),$,#3241);
+#10947=IFCRELASSIGNSTOPRODUCT('05gOeLvjP3SPXQ$qQIgntk',$,$,$,(#3955),$,#3343);
+#10948=IFCRELASSIGNSTOPRODUCT('3Jyl2rOWb0lP_yhNU0nDHI',$,$,$,(#3955),$,#5284);
+#10949=IFCRELASSIGNSTOPRODUCT('0hQJ9zgMD2KeOFYF9LA5MC',$,$,$,(#3955),$,#6192);
+#10950=IFCRELASSIGNSTOPRODUCT('1QsstODx9F7Rq9Mk8pmZd$',$,$,$,(#3957),$,#299);
+#10951=IFCRELASSIGNSTOPRODUCT('0OQmdZKinBoQJmxzIgxaou',$,$,$,(#3957),$,#647);
+#10952=IFCRELASSIGNSTOPRODUCT('2AB3gt5BPBtv1I4mo1bBnP',$,$,$,(#3957),$,#1245);
+#10953=IFCRELASSIGNSTOPRODUCT('14vb5ItmrBu87uYIR86XV_',$,$,$,(#3957),$,#1459);
+#10954=IFCRELASSIGNSTOPRODUCT('0_pAHrwjv1ehtn1V_0GK$K',$,$,$,(#3957),$,#1593);
+#10955=IFCRELASSIGNSTOPRODUCT('0OatyA7MbEp8_9yMbi9IHO',$,$,$,(#3957),$,#1742);
+#10956=IFCRELASSIGNSTOPRODUCT('3eXLtveZX4swYS0WAsseE8',$,$,$,(#3957),$,#2081);
+#10957=IFCRELASSIGNSTOPRODUCT('11XtKlMLrFLvPFrF8swVe$',$,$,$,(#3957),$,#2251);
+#10958=IFCRELASSIGNSTOPRODUCT('0ziKChyCz1Jf8Xzp4vPAMl',$,$,$,(#3957),$,#2332);
+#10959=IFCRELASSIGNSTOPRODUCT('04DHRqhIPE192LEnBMwWqo',$,$,$,(#3957),$,#5898);
+#10960=IFCRELASSIGNSTOPRODUCT('07ecMHTzr2OgnxpEfWFN8m',$,$,$,(#3957),$,#6627);
+#10961=IFCRELASSIGNSTOPRODUCT('1MftMhSZ5BzA1L5blfC3XF',$,$,$,(#3957),$,#6628);
+#10962=IFCRELASSIGNSTOPRODUCT('33Jp9o9Un5rxt0EmmXi_G_',$,$,$,(#3957),$,#6629);
+#10963=IFCRELASSIGNSTOPRODUCT('30GFSCMQHBn88PMKR8LJL$',$,$,$,(#3957),$,#6630);
+#10964=IFCRELASSIGNSTOPRODUCT('228VyHqTr2Zhq0MCBiXFCI',$,$,$,(#3959),$,#2798);
+#10965=IFCRELASSIGNSTOPRODUCT('0munpZu7b8DBUB$xdCgzSC',$,$,$,(#3959),$,#2900);
+#10966=IFCRELASSIGNSTOPRODUCT('12twzmqcv4SROYx0Hs$xTw',$,$,$,(#3959),$,#2925);
+#10967=IFCRELASSIGNSTOPRODUCT('1NPvSjEVX0zgBkxTBabqPT',$,$,$,(#3959),$,#2973);
+#10968=IFCRELASSIGNSTOPRODUCT('1$unMBv3T01g2hy0ATTILq',$,$,$,(#3959),$,#2848);
+#10969=IFCRELASSIGNSTOPRODUCT('2_Z$hj1GPAg8reLDFXjkZm',$,$,$,(#3959),$,#2949);
+#10970=IFCRELASSIGNSTOPRODUCT('1pJ04QgojAu9MhxMzujeXr',$,$,$,(#3961),$,#3048);
+#10971=IFCRELASSIGNSTOPRODUCT('2Z29uUhqf0U8bQE5fmFc0i',$,$,$,(#4926),$,#4811);
+#10972=IFCRELASSIGNSTOPRODUCT('0l9SXsj$fEDOx5lLaCB_Ev',$,$,$,(#4935),$,#4285);
+#10973=IFCRELASSIGNSTOPRODUCT('1iO6LCkWrFQwWKaVaxde9w',$,$,$,(#4935),$,#4320);
+#10974=IFCRELASSIGNSTOPRODUCT('3zgDygO8L4px5mTiv4P5fh',$,$,$,(#4936),$,#4343);
+#10975=IFCRELASSIGNSTOPRODUCT('3mIDGq4fP3y83g7qkUtnWD',$,$,$,(#4937),$,#4034);
+#10976=IFCRELASSIGNSTOPRODUCT('0yowq6KAbDXPV2CutCJb24',$,$,$,(#4937),$,#4058);
+#10977=IFCRELASSIGNSTOPRODUCT('0vTjQSEIvE$QyN7rdQNsHI',$,$,$,(#4937),$,#7345);
+#10978=IFCRELASSIGNSTOPRODUCT('2p1vDS62T2custbhE6Bs2h',$,$,$,(#4937),$,#7346);
+#10979=IFCRELASSIGNSTOPRODUCT('2pcTxpS6TEMPy6WkE8B$gX',$,$,$,(#4937),$,#7347);
+#10980=IFCRELASSIGNSTOPRODUCT('0Kj53cVTP1vv_VymPY0jQr',$,$,$,(#4937),$,#7348);
+#10981=IFCRELASSIGNSTOPRODUCT('0bX$uFOATDQ88PkkOdubbf',$,$,$,(#4937),$,#7349);
+#10982=IFCRELASSIGNSTOPRODUCT('3lV2LPvv5AHuv0SeEPHEQD',$,$,$,(#4937),$,#7350);
+#10983=IFCRELASSIGNSTOPRODUCT('2Bi7Fn7hbB3hPSF3jd$025',$,$,$,(#4937),$,#7351);
+#10984=IFCRELASSIGNSTOPRODUCT('0nwAT7zu55DR34ckeN73Al',$,$,$,(#4937),$,#7352);
+#10985=IFCRELASSIGNSTOPRODUCT('0wJf0CMer9jxLAd_HeZb1p',$,$,$,(#4937),$,#7353);
+#10986=IFCRELASSIGNSTOPRODUCT('3osIL1vHHA3gcHzJnrvK8f',$,$,$,(#4937),$,#7354);
+#10987=IFCRELASSIGNSTOPRODUCT('1V3Z7WaVP8Vu7YxI9Pz1sw',$,$,$,(#5399),$,#5022);
+#10988=IFCRELASSIGNSTOPRODUCT('1TUPuQPpjC9u7sX5ZWQ70t',$,$,$,(#5399),$,#5047);
+#10989=IFCRELASSIGNSTOPRODUCT('34QG85mGb8LfJpSH1qG9qj',$,$,$,(#5399),$,#5072);
+#10990=IFCRELASSIGNSTOPRODUCT('1E_Xm9AhD6VhLSRJS0fOoR',$,$,$,(#5400),$,#5234);
+#10991=IFCRELASSIGNSTOPRODUCT('2RGKDzUpD3Yx3Lh_0ZiAmy',$,$,$,(#5400),$,#6076);
+#10992=IFCRELASSIGNSTOPRODUCT('0P9_2DbrbCPB9iwlRGgpnJ',$,$,$,(#5400),$,#6230);
+#10993=IFCRELASSIGNSTOPRODUCT('3jQTE5a4D5CBgnoCvINKdb',$,$,$,(#5400),$,#6231);
+#10994=IFCRELASSIGNSTOPRODUCT('3dI44$E497Ev_DlgXGersp',$,$,$,(#7785),$,#5963);
+#10995=IFCRELASSIGNSTOPRODUCT('0qOf4dK3b93PRDMC6VtGB6',$,$,$,(#7785),$,#5964);
+#10996=IFCRELASSIGNSTOPRODUCT('1GBeYGkDr9ghTIuFR8WkuS',$,$,$,(#7785),$,#5965);
+#10997=IFCRELASSIGNSTOPRODUCT('0a8THvvlrCfOUw_WbmU6Oy',$,$,$,(#7785),$,#5966);
+#10998=IFCRELASSIGNSTOPRODUCT('0x_uBdM0P9aAybl7GGFiJu',$,$,$,(#7785),$,#5967);
+#10999=IFCRELASSIGNSTOPRODUCT('0YKZ8V4Uj0Kw5RyspBuPLv',$,$,$,(#7786),$,#6957);
+#11000=IFCRELASSIGNSTOPRODUCT('1$HAGVLHnFfADY1vanI5l$',$,$,$,(#7786),$,#6958);
+#11001=IFCRELASSIGNSTOPRODUCT('0X2gYywz98TOK4HrUnD07G',$,$,$,(#7786),$,#6959);
+#11002=IFCRELASSIGNSTOPRODUCT('1aanHYMJb8revBeI2unBgt',$,$,$,(#7786),$,#6960);
+#11003=IFCRELASSIGNSTOPRODUCT('3AtIZWs$5CPO5OeQgYiJ3P',$,$,$,(#7787),$,#5639);
+#11004=IFCRELASSIGNSTOPRODUCT('2wQbSCaPL9TBwdTZWIDHh2',$,$,$,(#7787),$,#5661);
+#11005=IFCRELASSIGNSTOPRODUCT('1kUtqYvnf4vfQOHt$5z0IQ',$,$,$,(#7787),$,#5662);
+#11006=IFCRELASSIGNSTOPRODUCT('3j0Y6Tubv7pB8Se2affddV',$,$,$,(#7787),$,#5620);
+#11007=IFCRELASSIGNSTOPRODUCT('02K3iiH1n3POWaAbp8MUCd',$,$,$,(#9795),$,#9091);
+#11008=IFCRELASSIGNSTOPRODUCT('1$2W_1hD93RPTW7LWjouC8',$,$,$,(#9795),$,#9115);
+#11009=IFCRELASSIGNSTOPRODUCT('3ANjaDu7bFoPLbsNLu_Pw8',$,$,$,(#9795),$,#9139);
+#11010=IFCRELASSIGNSTOPRODUCT('3y$gDWZ390BR_0CXduvQYh',$,$,$,(#9795),$,#9163);
+#11011=IFCRELASSIGNSTOPRODUCT('0Tgn25ELvC3BK5$E5dsm_f',$,$,$,(#9797),$,#9187);
+#11012=IFCRELASSIGNSTOPRODUCT('23VcmPg5rBdO76IAaVnnqQ',$,$,$,(#9798),$,#9322);
+#11013=IFCRELASSIGNSTOPRODUCT('38AOLQJ_X6wfN3mW9x9EcB',$,$,$,(#9798),$,#9323);
+#11014=IFCRELASSIGNSTOPRODUCT('0Ng6yEKPL85eyX5LkO66L2',$,$,$,(#9798),$,#9700);
+#11015=IFCRELASSIGNSTOPRODUCT('2mQYsl5eDFVgOepGu9y7N9',$,$,$,(#9798),$,#10216);
+#11016=IFCRELASSIGNSTOPRODUCT('2eKAoT8fj8nOa8a3dJ9NxE',$,$,$,(#9798),$,#10287);
+#11017=IFCRELASSIGNSTOPRODUCT('2jbtuQ$2DEtQjudXZ0nOXC',$,$,$,(#9798),$,#10358);
+#11018=IFCRELASSIGNSTOPRODUCT('0wKo3iy8LCc9tknuoYyHSZ',$,$,$,(#9798),$,#10408);
+#11019=IFCRELASSIGNSTOPRODUCT('3i4G8yPyj09wskGi8HbUP8',$,$,$,(#9798),$,#10472);
+#11020=IFCRELASSIGNSTOPRODUCT('0sGWDG9kb1ovYHn0KQPMxM',$,$,$,(#9798),$,#10522);
+#11021=IFCRELASSIGNSTOPRODUCT('3MckIOIHj3dwO2hIbhbrEB',$,$,$,(#9798),$,#10572);
 ENDSEC;
 END-ISO-10303-21;