moving whatsapp files to new phone... help!

I just bought an S7 edge. My old samsung didn't back up in a month so files restored on my edge are a month out of date. I tried to back up my whatsapp chat from old phone to google drive again, but it wouldn't back up ... so I moved them to my edge s7 via blue tooth. whatsapp is already running on my edgeS7 so moving the files to the whatsapp folder did nothing.

Is there a way to restore the files still? Do I uninstall whatsapp and reinstall it? and if I do uninstall won't the folder I moved the files to disappear with the uninstall ? I have copied these files also to google drive from the Edge S7. if I uninstall whatsapp and reinstall it will it restore the files from google drive? I am skeptical because i didn't get a prompt from google drive to replace old files with the same names when I backed up. Should I just go ahead uninstall and reinstall and hope it backs up from my files on my phone now or from google drive?

Thanks but it didn't help and I also posted on that forum and no one responded.