As you may know, Mergeable file type is defined in SourceAnywhere Hosted Server Manager:
There may be some file types that are not included in Server Manager's mergeable file type list by default. Of course, you can add a new file type to the list and add files from client side. But please be advised that it only works if you add file type to Server Manager prior to adding the type of files from client side. For existing files, you will have to manually modify the file property.
Thus, we developed the attached application to help you update file property to Mergeable easily. Please note the app is developed based on v3.0.1 of SourceAnywhere Hosted. Below is a screenshot for your reference:
If you have any questions, please feel free to contact us at support @ dynamsoft.com.