1.0.49 log missing

I'm not sure what you mean by this? Changelog for v1.0.49 shows up perfectly fine in-game on Factorio 2.0

If you mean that it's not included in the 2.1 changelog, I'm not going to update the 2.1 branch of the changelog, just to include changes made on the 2.0 branch, especially when those changes have already been done or mentioned on the 2.1 branch, or aren't needed to begin with.

The two branches are basically treated as entirely separate, unrelated entries, simply sharing the same mod page.

I was looking for it in 2.0 since i was in my 2.0 save when the update pop up for 49 but only 48 was showing. tho all i ask is what changed didn't need more.

Looking in the changelog i the page it's not there. tho showing in game works as normal or i would i given you a error about it being broken.