Are GA4 expansions compatible with GA5?

and there is no ‘Groove Agent SE’ plugin :confused: so that means if, like me, you have a FULL version of GA4 and you upgrade to Cubase 10.5, you will REPLACE your Full GA4 with GA5 SE… and not be able to easily get it back! :confused: :confused: I have already raised ticket in the void of Steinberg support…