We need to move back to version 6 full edition from the version 7 EE edition in a project. Can the project files converted to EE7 be opened in FB6 or migrated back?
Yes, but… not officially supported, there were some minor changes to some actions between FB6 and 7 that are not backwards compatible. Just change the file extension to .fbp6 or .fbz6 - no guarantees but it does work most of the time.