In the File Migration Global Settings, you can choose whether a file at the target should be kept if a file at the source has an identical name.

For example, if menu.docx exists at both the source and target, and you choose to

• Overwrite: discard the file at the target and replace it with the file from the source. Also used to bring a fresh copy of content after the first pass.​
• Copy the file, it will be appended with _old, so our example would become menu_old.docx and the original file will be kept. This is useful when a user has manually migrated his files and started to use them in the target.
• Ignore: an error will occur “File with the same name already exists”. This is a SharePoint error. You need to overwrite or copy the file.

Any files that exist in the target that don’t match file names from the source are always retained.

Important: for Overwrite and Copy, we need an existing delta pass in order to find a previous copy. This is why it will work during a second run, not from the first run. Cloudiway needs the IDs of the files in the target to be able to Overwrite or Copy, and therefore, it needs to be in the second run, given that the first run will store the IDs and Target IDs of these files in our database.

If you have already a file with the same name that was not migrated with Cloudiway, you will have to overwrite it.