Copy a Library doesn't have option "Replace All"
When you copy a library from one site to another, you don't have an option to "Replace All".
This negates the ability to run incremental changes from one site to another.
I have 2 sites, "site A" is for upload and "site B" site is the live/pilot site. This approach is so I can re-arrange the content from an on-site fileshare to Office 365.
I am aware that if I conduct a move instead of a copy the "Replace All" option is available. This isn't useful though, because moving the files means that any on-site changes would require a full filesystem upload to get them.
Using a 2 site approach wouldn't be necessary if Migration Manager operated properly. Refer to my other suggestion today:
"Migration Manager fails to upload a fileshare folder, only contents of the folder"