Is this an error or not? I would guess that it's up to each an everyone to decide.
When you quote something here in threads it looks like this:
Is this is how a code looks like.
In UBB.classic there was no nice tables, and it did look like in attachment 1 (only quote shown, but the same principle for code tag).
Now, when you import your data from UBB.classic why doesn't the quote and code tags get the new nice table look of threads?
I do believe that imported quotes and codes should get the new table look.