https://community.graphisoft.com/t5/Collaboration-with-other/AC13-gt-AC11/m-p/182175#M21639 Okay, thanks for that. Sat, 26 Feb 2011 10:06:27 GMT Anonymous 2011-02-26T10:06:27Z https://community.graphisoft.com/t5/Collaboration-with-other/AC13-gt-AC11/m-p/182173#M21637 <DIV class="actalk-migrated-content"><T>Can anyone tell me whether you can save an ArchiCAD 13 file to ArchiCAD 11. I am working on AC11 and have received files created in AC13, however cannot obviously open. Is it possible to convert? I have seen converters for earlier files, but not for converting to older version.</T></DIV> Sat, 26 Feb 2011 07:08:52 GMT https://community.graphisoft.com/t5/Collaboration-with-other/AC13-gt-AC11/m-p/182173#M21637 Anonymous 2011-02-26T07:08:52Z https://community.graphisoft.com/t5/Collaboration-with-other/AC13-gt-AC11/m-p/182174#M21638 You can save backwards but only one version at a time so you will have to first save it as ArchiCAD 12 and then open in 12 to save back to 11. Sat, 26 Feb 2011 09:15:05 GMT https://community.graphisoft.com/t5/Collaboration-with-other/AC13-gt-AC11/m-p/182174#M21638 Anonymous 2011-02-26T09:15:05Z https://community.graphisoft.com/t5/Collaboration-with-other/AC13-gt-AC11/m-p/182175#M21639 Okay, thanks for that. Sat, 26 Feb 2011 10:06:27 GMT https://community.graphisoft.com/t5/Collaboration-with-other/AC13-gt-AC11/m-p/182175#M21639 Anonymous 2011-02-26T10:06:27Z