Hello, I'm trying to find a way of merging my 2 .esps together into one. I currently one with a working exterior and another with several working interiors, so to make any up/downloading smoother I was hoping to merge them.

I've tried to find the answer using Google but my Search Fu is failing today.

Is there a way to do this using TESsnip? Or even the CK? (I'm doubting the second)

Not really so far as I know. You can turn one into an esm then merge the other into it using version control.

You can with TESVSnip, but it involves a ton of manual copying and pasting. You'll end up with duplicate cells of everything...all totally random. I tried this once with an esp and esm...gave up. Not worth the effort.

I'm going to give it a go using TESVSnip, because at the moment it's that or totally remake them in the exterior.esp.

Will attempt the smallest interior first, see how long that takes

Well turns out you do it with the CK.

Opened it up with both .esps, made one active.
Duplicated the interior cells I wanted. And saved.
Loaded the CK with just the saved .esp and linked a door.
In game it works. Travelled through the door several times without CTD'ing as well.

Really? Nice!

yep, just been doing some more work on it. Used different doors multiple times with no issue.

Feels good to finally get somewhere, now just need Beth to fix the fast travel CTD