I've attached a simple assembly for demonstration. It is a cylinder on a square. The OD of the cylinder is defined by the size of the square, in this case, it is 1/2" smaller. It was created by editing the cylinder in context of the AY assembly and clicking on the SQ sketch dimension.
Even with the AY assembly is still open, if I open the CY part file & click manage equations, I see the following error.
Anyway to eliminate that while still using equations?