Database Calender-, Contact- and Drive-Data

Because the Upgrade from Univention-Version 4.2.4 to 4.4-4 errata620 simply doesn’t work with our server (one time the OX was completely destroyed, the other time the whole server and so on), we now want to set up a new one and then switch from the old to the new one.

Everything so far is configured, but now I saw the big differences between the database-tables and structure…
Some tables have completely different names, others had some differences concerning the table columns.

So my idea was to maybe just rescue the calendar data and the contacts (maybe the ox-drive also).
But even the calender-table seems to not have the same name in the different versions.
Maybe somebody can help me out and tell me which are the comparing tables (calendar, contacts, drive)?

Sorry for the long post!