https://community.graphisoft.com/t5/Modeling/internal-wall-problem/m-p/184249#M99807 Thanks hkrna, the skin priorities was checked so I unchecked it and its all ok now. Tue, 21 Aug 2012 11:29:46 GMT Anonymous 2012-08-21T11:29:46Z https://community.graphisoft.com/t5/Modeling/internal-wall-problem/m-p/184247#M99805 <DIV class="actalk-migrated-content"><T>I am having problems when importing drawings from Archicad 9 into 13.<BR /> The internal walls do not 'merge' into the cavity walls and I can not discover why, any ideas?<BR /> I have attached a screen shot showing what happens.</T></DIV><BR /><IMG src="http://community.graphisoft.com/t5/image/serverpage/image-id/72281i843D10B453CB8FF3/image-size/large?v=v2&amp;px=999" border="0" alt="screen shot.JPG" title="screen shot.JPG" /> Wed, 24 May 2023 10:54:55 GMT https://community.graphisoft.com/t5/Modeling/internal-wall-problem/m-p/184247#M99805 Anonymous 2023-05-24T10:54:55Z https://community.graphisoft.com/t5/Modeling/internal-wall-problem/m-p/184248#M99806 Wow, It's been quite long since I used AC 9, and I actually skipped AC13 altogether, but I guess you have a problem with the priorities.<BR /> - Check composite priorities<BR /> - Check if you have ticked the Enable Skin Priorities (see screenshot)<BR /> - Last (and least used) Check layer intersection numbers (layer settings ctrl+L) Tue, 21 Aug 2012 09:18:17 GMT https://community.graphisoft.com/t5/Modeling/internal-wall-problem/m-p/184248#M99806 Karoly Horvath 2012-08-21T09:18:17Z https://community.graphisoft.com/t5/Modeling/internal-wall-problem/m-p/184249#M99807 Thanks hkrna, the skin priorities was checked so I unchecked it and its all ok now. Tue, 21 Aug 2012 11:29:46 GMT https://community.graphisoft.com/t5/Modeling/internal-wall-problem/m-p/184249#M99807 Anonymous 2012-08-21T11:29:46Z