Annotum/Annotum — Issue #28: Comments imported with malformed dates (-0001/11/30 at 12:00 am)
Author: devinreams
Created: 2011-12-14 22:52:28+00:00
State: open

From Ryan at WordPress.com:

The ones that caused the problem had all of their dates set to -0001/11/30 at 12:00 am (yes, that’s negative).

All comments that were imported are showing that date. Consequently, they aren’t being displayed.