Why do features in assys, lose associativity when I rename them using SW Explorer? I have been doing this for years and had a few issues but lately SW 2014 I am seeing numerous "?" in my files. My assys are "Top Down" so in a situation where I have a tapped hole in one part model and a concentricly related hole in a second part, they lose their association after I rename the one or both parts, in SW Explorer. When I open the sketch in the second part the sketch shows it still fully defined (black) but it has a "?" for that feature and in reality it is not related to the tapped hole in the first part.

This is not only annoying it has at time caused problems when there is a change and I do not see the feature rebuild correctly, ie a c-bore dosnt move with a tapped hole that had its location changed. The only solution I have is to edit the part in assy. open the feature, delete the relations, save and close the part, edit the part in assy. again and reattach the relations. Do this to 8-10 features/part and maybe 20-30 parts and I might as well just start over!

Thanks in advance for any suggestions