I've recently upgraded to Lt 2006 from 2000. When I come to insert xrefs into standard drawing sheets created in 2000 but opended through 2006 the block unit scale shows a factor of 0.0394. When I xref into a drawing created in 2006 there is no problem and the scale factor stays as 1.
I've checked all the source and target units on both new and old drawings and they're all set the same (mm).
Help.......!!
MD