I recently began using large assembly mode again.  I haven't used it since it was first introduced because it always seemed to cause SWX to have errors unless everything was rebuilt.  It works well until I do one thing: put a mate between two temporary axis.  That mate will fail every time I open an assembly.  The error will not be fixed by any actions except opening the assembly that the mate is in (maybe a sub-assembly) and doing a Ctrl + Q to force the assembly to rebuild.  Does anyone else have this (or similar) issue?