Yeah it's a common problem with ongoing android games.. Developer updates and all the hours of progress is gone. It sucks.
Best to try to get the save files from your android data folder first, may have to use the pc or other methods, then put it in the new updated game's folder and see if it's compatible. (and even then sometimes it isn't)
Not with every update, but mainly when there is a new version that requires updates like this. Since you have to uninstall the old versión, the data (including save files) is also deleted. You can move the save files using data explorers (external ones, not the one that comes pre instaled), but it is a pain, and sadly since it seems like you already unistalled the previous versión I think you can't recover your save files anymore anyway, but something to keep in mind for the future
