Just recently get bored from Solidworks assembly restructure function-

Let's say we have

- an assembly as A, under A, there is A1 as subassembly;

- A has been mated with B via 5 constraints from A1;

Now, we restructure assembly A by promoting some parts from A1 into assembly A;

then the previous mates between A and B greyed out.

When editing the mates, B has no problem-we still can find the feature.

I have to work back on those mates 1 by 1 to find assembly A feature selection - surface, centre, etc...

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My wondering here is -

All the mates between A and B are generated from A1 and B, the parts are still there after promoting;

Why all the mates get grey?

Is there a switch I missed out?

Best Regards,

Wayne