Filezilla Version: 3.51.0
I faced several issue with my website when trying to update via the above version of Filezilla. There was 200+ failed transfers. However everything was fine server side. When i tried to re queue the transfer, they could not be re queued.
After searching the internet, i found that Winscp worked for some people. So that is what i tried and all files uploaded successfully. thereafter there were no issues.
Today’s update to theme 7.2.1 and core 3.2.1 update was smooth as well.
So if your site is giving you trouble after the update, please check your FTP program’s files transfer queue to check for failed transfers and try the above solution to see if it works for you.
Hope this helps.