Purpose of ZO_Ingame.lua in Saved Variables?

[Sp00sty]

Hello all,

Every time we have a new PTS load we have to work around the API changes for addons. Eventually we get to Live and by then we have a lot of updated addons starting to roll in.

After the the 1st 2 weeks of Live I will copy over all the updated addons back into my PTS so I can use them w/o errors until the next major patch.

But I have never known what the purpose of ZO_Ingame.lua is? Is it the same between Live and PTS? Should I copy the most current updated live copy when I copy the updated addons into the PTS?

Thanks