[imp] autocomplete list is empty after server migration

[Henry O. Kreymborg (Chip)]

Hi all,
 
In a shared server at Ubiquity, they migrated everyone to a new server due
to failing hardware. Everything in Horde/IMP H3 (4.2) seems fine except now
the autocomplete for TO, CC are empty. I told them there must be a database
or log file that they missed that contains the autocomplete data per each
user. Can anyone verify this assumption and tell me how to help them migrate
this data?

Much appreciate!

Chip