Migration from Documentum to SharePoint Online

HiRizwan Ansari ,

I don't know of a tool to do it but when we have been doing file transfers from 3rd party document management systems like eDocs for example we have always exported the files and meta data to a file store first then imported the documents using ShareGate. This made the process easier so we weren't reliant on some complicated custom scripts to get the files from one system into SharePoint.  

In terms of timings for migrations and data integrity this method is a lot easier to manage.

Hope that helps.

Kind regards

Andy