From FL5 to Glyphs3. Best practices

How to export FL5 files to G3 without losses (if possible)? I want to keep MM, kerning, otf coding.

I know this has been mentioned before in other threads. different migration options have been considered. Probably the most effective solution at the moment?

In this repository are two scripts that can write and read .glyphs files from within FL5: GitHub - schriftgestalt/Glyphs-Scripts: Some useful scripts to work with Glyphs