Merging topics

[Vassago Embrace]

I created Realm1 for a Paizo sourcebook and Realm2 for another different Paizo sourcebook. In both sourcebooks they mention the town of Sandpoint.

I then exported Realm2 and imported it into Realm1, expecting the topic Sandpoint to be merged. This did not happen, and after some research on this very forum I understood why.

My question is: since it seems impossible to merge the two topics the way I did it, is there any other way to merge them?

In the new merged realm, can I somehow automatically take all of the information in Sandpoint1, move them to Sandpoint2 so that I can erase an entry as not to have duplicates?

My goal is creating a realm for every sourcebook I like, and them merge them all together to have a conclusive campaign setting. But it's not worth it if it's full of duplicate topics with different info all over the place. Any insight on this?