Solid Groove weld in sub assembly weldment 2 levels down fails "Feature geometry is not up-to-date"?

[danders238]

Hi,

Have top-level assembly where 2 square groove welds contained in sub assembly 2 levels down fails when opened in the top-level assembly.  The weld have no errors in the sub assembly or geom-checks they were created in while that assembly is opened or the next higher level assembly is opened.
Welds are shown in attached image.  Unfortunately, I'm not able to upload or show the the models that I'm working with.

The welds have the following error message:

FEATURE #12 (GROOVE WELD) failed regeneration.

Feature geometry is not up-to-date.

Would anyone have any ideas what's causing the lower level welds to possibly fail?
Any ideas related to another way to create the solid welds I'm trying to create?

Thanks for any help you can provide!

Don A