Probably an easy fix but I am getting aggravated.
so in this example, I have 2x2ft concrete tiles that I am laying out on a marina I have designed. So I linear pattern on the X axis, then I select that row and linear pattern it on the Y axis. yay!! streamers, and cake and such. HOWEVER (grumble), lets say I take a piece of 2x6in perimeter board and go to mate it to these tiles. For some reason, those pieces decide they are not fixed anymore and I get tiles ALL. OVER. THE. PLACE. Ctrl+Z multiple times and dissolve and fix seem to be a.... work around... but its not ideal. Should not linear parts be fixed? like... all of them?
Well works fine for me.
Is the parent file fixed or constrained fully? If yes then try a force rebuild (ctrl +q).