Merging multiple wallet.dat encrypted files

[TheJuice]

I'm migrating most of my coins to cold storage. However, over the past 4 years I have amassed a lot of bitcoin addresses - some occasionally receive small change (old group buys, AM shares, etc).

Is there an easy way to merge ~4 wallet.dat files? I found some manual ways with dumping private keys, but anything easier?

[Crypto9er]

 PyWallet (https://github.com/jackjack-jj/pywallet).

 Run Pywallet --web
 Visit http://localhost:8989/
 Under Tab "Import", scroll down to "Merge two wallets".

You can merge them by pair.

Crypto9er.