[Zope] How to move acl_users from Zope 2.7.8 to 2.10.7 ?

[Aleksey Tsalolikhin]

Dear Andreas,

> You have a backup and you have a testing server?!

I don't have a backup of the testing server but I can recreate it if I have to.

My questions:

1. can I export acl_users from the old server and import it into the
new server?

2. is there any way to combine acl_users from the old server with
acl_users from the new server?

Thanks,
-at