C4R and BIM360 stuff is a good bit different from normal synchronization, so if/as you migrate you’ll have to change up the tools a good bit. Generally the same data is available if needed. If you go into workshare monitor, click the history button, and then export history shown you can save a .txt for the last five days of data on synchronization efforts. Detailed explanation can be found here:
I don’t recall if it has open times on there or not (I’m not in an environment to check), but I know that sync times and errors are given. Having to open each model and export the history could be rather time consuming though. Likely worth reviewing the work @Andreas_Dieckmann’s started and providing him the feedback he noted above. I’d test it myself but again, I’m not in an environment to test anything like this.
Data for sheet work vs modeling work will be mostly worthless as the journals don’t typically indicate when a user stops working to take a phone call, read an email, run to the kitchen for a cookie delivered from a vendor, and the like. If everyone was always working 100% the data would be more useful but that’s not a likely scenario in my experience.