Use the concentric mate first and then use the fix mate
or model the lid in context
if you use the lid feature, it will not really have any references, it is just a dumb solid in space
Creating my own lid was the way to go.
It was a bit annoying finding the SW lid at some distance from the assembly, after running Flow.
From now on I'll make my own.
this is something we teach in our mentoring here at Hawk Ridge. it has advantages but you need to know the disadvantages as well. glad you were able to get it to work.