project north reset itself?

[eivendur1]

hello community,

anyone encountered something like this? my linked dwg (shared coordinates) aligned its rotation to my project north (does that make sense?)
this is revit 2010 sp2 + acad2010, workshared file
all was setup nicely, survey-dwg in correct position, true north correct, project north rotated and building evolving in correct spot - and now, all of a sudden, my north arrow on the kinked dwg is aligned with my project north.
and no, noone went ahead and rotated the dwg in acad.

does anyone know how to fix that again, besides rotating project north again (which i am not to keen to do, as the project is nearing its final design and messing with rotating north always seems to not work as i am expecting)
thanks!
Tom

[cliff collins]

Perhaps try detaching the cad dwg, and re-link it using shared coordinates?

cheers...........