.zdoc files in WorkDrive

.zdoc files in WorkDrive

Hello,
I recently moved from Zoho Docs to WorkDrive. Everything is working well except for Zoho Writer documents from Zoho Docs. All of these documents have the .zdoc extension, and are apparently not recognized by WorkDrive. Is there a way you could have WorkDrive automatically recognize these .zdoc files as Writer files, or convert them to a file that is compatible with WorkDrive?

As is, there is no efficient way (that I know of) to convert these files to ones that are recognized by WorkDrive. 

This is the error message I get when I try to open one of the Writer Files: "We're unable to generate a preview as we do not support this file format.
Download to view this file"

Thanks,
Mitch