Hoping for some guidance here.

I am in need of deleting about 1,000 users from our Groupwise 2014 system.
Are there any tools or techniques where this can be done?

Does this require a 3rd party tool?

We are using Active Directory LDAP connectivity with Groupwise.
Some of these Active Directory accounts have already been deleted. So, just have a list/spreadsheet to go from.

I know when we were connected with eDirectory, it was simply deleting eDirectory object when the Groupwise snap-in was added to Console One. How can we do this with Active Directory?

It seems now with Active Directory it is a two step process.