[Pan-users] Getting "all headers"

[Chris]

For me groups that have more than 4 or 5 million articles take a few
days to download all the headers.  I need to break up the retrieval
over several days due to bandwidth limitations.   From what I can tell
it's not possible to stop a "get all headers" and then restart it
without starting over from the beginning.  I know it's possible to
pause the task and restart it but I'm talking about completely
restarting the task.

Generally speaking I want all the active headers in a particular
group.   What I really want is for Pan to call GROUPLIST (or whatever
it is) to get all the valid article numbers.  Then check that list
against the headers currently in the database, then fill in the gaps.
This is basically a "sync" from my current state to the group's state.

The article expiration should work the same way.  Any headers that are
no longer valid should be removed from the database.

Can Pan already do this?

Thanks

CR