Framework databases (.fw, .fw2,.fw3, etc.) can probably be somehow converted or translated using the very same program from which they originate. It should be possible to upgrade versions of FrameWork databases to high version, but a downgrade option is unlikely.
Convert Framework database to FrameWork III database file.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert fw to fw3 on Windows
A unified computing architecture
Convert from fw file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.