https://community.graphisoft.com/t5/Modeling/Save-backwards-from-18-to-16-with-materials/m-p/275959#M143266 <DIV class="actalk-migrated-content"><T>hi all<BR /> how can i transfer my model from arch 18 to archicad 16 with material ?</T></DIV> Thu, 11 Jun 2015 15:23:56 GMT Anonymous 2015-06-11T15:23:56Z https://community.graphisoft.com/t5/Modeling/Save-backwards-from-18-to-16-with-materials/m-p/275959#M143266 <DIV class="actalk-migrated-content"><T>hi all<BR /> how can i transfer my model from arch 18 to archicad 16 with material ?</T></DIV> Thu, 11 Jun 2015 15:23:56 GMT https://community.graphisoft.com/t5/Modeling/Save-backwards-from-18-to-16-with-materials/m-p/275959#M143266 Anonymous 2015-06-11T15:23:56Z https://community.graphisoft.com/t5/Modeling/Save-backwards-from-18-to-16-with-materials/m-p/275960#M143267 Save as AC17 version in AC18.<BR /> Then open it in AC17 and save it as AC16. This is the only way.<BR /> However, GDL Objects will probably be missing in the backsaved file. Also, any element/data created with Tools/commands specific to AC17 and AC18 will not be there in AC16 since in that version they didn't exist.<BR /> What is not called a Surface was called Material in AC16. I suppose your AC18 Surfaces will save back to AC16 as Materials. Fri, 12 Jun 2015 02:16:59 GMT https://community.graphisoft.com/t5/Modeling/Save-backwards-from-18-to-16-with-materials/m-p/275960#M143267 Laszlo Nagy 2015-06-12T02:16:59Z