Are databases created within DT4 compatible with DTTG?

[BLUEFROG]

To my understanding, DT3 databases are not compatible with DT4.

I’m not sure where you got this idea, but that is incorrect. There is no migration of databases between 3 and 4. And except for audit-proof databases, there is no problem with DEVONthink 4 databases in DEVONthink To Go.

PS: Did you read this…

READ ME – Running the DEVONthink 4 Beta

Read this if you want to run the DEVONthink 4 Beta… Firstly… Optimally, DEVONthink 4 should be installed on a separate macOS user account in its own ~/Applications directory to isolate it from other user accounts. However, if you want to run DEVONthink 4 and use it with your DEVONthink 3 databases, you need to make sure version 3 can’t be launched. In the Finder, locate the DEVONthink 3 application. Control-click it, and choose Compress… After the ZIP file has been made, delete the DEVONthink…