I have an architectural plan hotlinked into a seperate drawing. In this new file I have added IE markers. Every time I open Archicad - the hotlink seems to have shifted causing all my IE markers / generated to be off. The building is 3 stories... Sometimes the shift is in the same direction as the time before, but not always. It is usually only 1-2feet. Any ideas why this is occuring or how it can be fixed??