Part Configs Won't Update in Assembly Configs

Hello,

I have created an assembly that contains a sheet metal part of varying lengths and has different hole patterns. The sheet metal part is equation driven and has roughly 1000 different configurations.

Problem: When I switch between assembly configurations, the called for sheet metal part does not update to show the configuration that is specified. Is this a Solidworks issue? Is there a way to get the assembly configs to show the correct part configs every time?

Thanks in advance!