We're running IDM 3.5.1, with an eDir - AD driver connecting to a
Windows 2008 (64-bit) DC. It is configured to synchronize most user
attributes in both directions, but just recently it has stopped syncing
from AD to eDir. From eDir to AD works fine, but nothing in the other
direction. The tracelog for the driver doesn't even "see" that the AD
object was modified.

I have stopped & restarted both the driver and the remote loader, to no
effect. What should I check next?