I did the following to make RoboHelp Source work with Azure DevOps Git...
To setup source control with Robohelp, perform the following actions:
You have started a new thread with what appears to be a procedure rather than a question. Was it your intention to simply provide a procedure to help others?
The fact that you refer to an XPJ file shows you are using a Classic version of RoboHelp. Perhaps you could add which version as that may be important.
The version is Robohelp 2017, Azure DevOps Git and VS2019. I am sure there is an easier method for the setup. But I attempted trying the TFS method and it does quite work as some of the literature I have read states.