A little bit of background:
I started with WPML which has an AWESOME TMS integrated. But for some reason, the String Translation plugin is totally broken. I spent nearly a week trying to solve a slowdown issue (it took over 10 minutes to save a single post)
So I decided to switch to Polylang.
Polylang promotes a TMS called Lingotek. But Lingotek seems to be discontinued. It only works in the "automatic translation" mode.
I would not like to switch again because it is a really hard hassle.
Maybe it's totally impossible to save my day, but what I need is a regular TMS
I only need something that keeps track of the changes in the default language and notifies or indicates somehow to my translations that there are new changes in a post that should be translated.