Resolve 17.1b studio, not saving fusion compo ?

Hi All !!

I'm using Davinci Resolve Studio 17.1b. I never used fusion... and I have my first issue ...

I create a new resolve project, empty...
go to fusion and create a compo importing inside fusion the clips ... , render with no problems... save resolve project... and when opening...

The fusion compo is empty... What I'm doing wrong ?

Thanks,
Enrique