On Transfer into the Base Product

If an entity (SCTN, GENSEC or PANE) has been changed or is new, set its TransferLetter to be that of the owning SITE and note that there is at least 1 changed item.

Update the entity's (SCTN, GENSEC or PANE) RevisionNumber to be the incremented value of that of the owning SITE, because we haven't yet changed the latter.

Increment the SITE's RevisionNumber, for example: '0' to '1' if any imported entities have changed.