Auto lock escalation and bulk insert - still locking

Hi all,

I am having some trouble with using auto lock escalation on a partitioned table.

In a very simple example, I have a table partition on an INT key.

I load to it in bulk using SSIS with a DTC transaction wrapped around it.  I think try to insert into another partition just with a simple insert command.  The latter insert command gets blocked.  If I don't bulk load the data in SSIS with a transaction, it works fine.  Why can't the lock just escalate to the partition level and let me do inserts in another partition?

Any thoughts would be helpful!