I'm just a front end designer working on a website for a client. Yesterday, the client attempted to update the theme. However, it crashed during installation (most likely due to a host server fault) and resulted in the white screen syndrome.
Unfortunately the client didn't have a recent back up. The hosting provider managed to restore a version from a few days ago. They say they've moved the broken version to separate server because the latest content is still there.
Now here's the crux: The restored website has doesn't have all the work I did on Tuesday. I would like to avoid having to do all that work again.
So my question is: Can the content (Parent/Child theme) that's been put aside be extracted and added to the current version of the site? And if so, what would be the strategy? What kind of expert would the client need to enlist? What complications would there be?
Any help with this would be greatly appreciated as my schedule is tight and I would really like to avoid having to do all that work again.
Many thanks in advance.