"Large Level Name Dictionaries were encountered"?

Hello,

What causes this message - "Large Level Name Dictionaries were encountered"?

If I do a compress that seems to take care of the problem.

I was under the impression that if I had a dgnlib with 2000 levels in it those levels were not actually in my dgn files until they were used, is that no longer the case?

v8i SS3 8.11.09.292

Thanks,

Tom F.