After load game I lost chests. there is way to fix it?
https://snipboard.io/OvQtYR.jpg

It appears you haven't updated the mod settings after the update. You are using chests larger than 10, so update mod setting to enable such chests. Hopefully that should be all

It is work. I guess.
https://snipboard.io/qTk5As.jpg
But I don't know what is two deleted positions.

Something from other updated mod

I think the same thing happened to me. I did the update and it showed:
Removed entities
high-iron-chest-6 (container) 368
wide iron-chest-6 (container) 96

After reloading and enabling Merging Iron it shows:
Changed entities
wide-iron-chest-6->WideChests_wide-iron-chest-6 96
high-iron-chest-6->WideChests_high-iron-chest-6 368

The chests look fine now. What I don't understand is why I had to turn on iron chests in the first place. My understanding is that my prior setup only allowed me to use iron chests, no other kind. Then when I did the upgrade, it forgot that I had already chosen Iron and made me pick it again.

Anyway, thanks for the fix!

Previously it was possible to set only single chest to be mergable, now every chest type has its own "mergability" setting. And unfortunately there isn't a way to migrate such settings