I tried it on Bambu Lab A1.
File→ Import →Import Configs - Select for Example eSun Pla+
After that → Filament → Add/Remove Filaments → eSun selected.
Now, eSun is showed as “System presets” → eSun Pla+
If I import unsupported eSun Filaments, it is showed under Unsupported and it is not selectable. For example PETG-Matte.