is there an easy way of merging?
see -> https://docs.google.com/spreadsheets/d/1EePwFFPHLiNGyQNUNN5_FMwqgNVmDgFZywQNFllrDOI/edit?usp=sharing
No, there is currently no way to merge individuals.
The only way is to manually 'fix' the correct (or, better) one, and disconnect/delete the other one.
So far, I have found mostly one-off 'wrong' ones; so it's easy to link the 'right' ones to the 'wrong' one's family, and delete the 'wrong' one.
But when there are 2 individuals with families, and I find they're duplicates, it's a lot of legwork to do this to all the relevant duplicate family members, so be cautious.
Thank you for your post here on the forum.
To assist you with merging duplications within your FTB software please take a look at the following link from our Help center.
Trusting this has proven useful to you.