Exporting a Garageband file for an older version of the app

I have a project created in Garageband v10.3.5 on an iMac still running Catalina (10.15.7) and saved to iCloud, which I opened using Garageband v10.4.6 on a different iMac running Monterey (12.4) - and saved, and therefore over-wrote.

Now Garageband v10.3.5 tells me I can't open that project because "it is created by a newer Garageband version".

Is there any way to export a Garageband project from v10.4.6 that can be opened by the earlier version of the app?