Heres the thing. I think the import deleted all posts that were not present in the import (for whatever reason- this needs to be checked of course!)
So I thought, run an export of all the properties (En + He) then rerun the import and map the export so all the custom data (such as content, permalinks, images) are applied. However when I tried this, it broke and nothing was imported correctly.
This may be the best solution (ie to start with 2 fresh imports of data) but the issue still stands regarding both points. Please urgently assist
I can restore a backup of the site before the import was run yesterday to get it to the state of production is currently so the original issue can be replicated if need be