Is it possible to save a project in ArchiCAD 27 compatible with 21?

[lopazz]

I use AC 27 while my colleague uses 21. He wants to see my project while I am on holiday. Is it possible to save my file as 21? Or is there any other way for him to be able to see it?

My search on Google didn't provide much insight. I know that 27 can save to 26. Does that mean that older versions are totally incompatible with 27?

Thank you for any replies.

[Eduardo Rolon]

You will need to install all versions down to AC22 which is the one that can save to 21 and open and do a "save as" in each one.

Take in consideration that there might be data loss.

If he needs to "see" your project it might be easier to send hime a BimX file.

[Barry Kelly]

Just to clarify what Eduardo has said.

27 saves to 26.

26 saves to 25.

Down to 22 that can save as 21.

If your colleague just needs to see the file and not save it, they can install 27 and run it in demo mode.

Will save you a lot of converting.

Barry.