General Support: Moving albums between two instances of Plogger

Hello,

We (foolishly) created four separate instances of plogger for the four parts of our non-profit organization. The idea was that non-technical volunteers could upload photos for their part of the organization without the possibility of hurting the other three.

Is it possible to consolidate in this way:

1. copy the contents of the source instance images directory to the images directory of the target instance
2. Export the relevant tables from the source instance and import them into the target instance

If this is a sound strategy, which tables are the relevant ones?

Thanks,

Brian