> The Ministry of the Interior and Safety also issued guidelines to each ministry stating, “All work materials should not be stored on office PCs but should be stored on the G-Drive.”

They very well might have only been saving to this storage system. It was probably mapped as a drive or shared folder on the PC.

Do they? It's not clear if this was two-way sync or access on-demand.

Like, I use Google Drive for Desktop but it only downloads the files I access. If I don't touch a file for a few days it's removed from my local cache.