Compare central model to previous exported model

Wondering if there is any way to compare a central model to a previous version of the same model after you have done a revit export?
Have tried the ModificationTracker.ModelComparison node from Data-Shapes but seems like the PreviousVersionDocument input doesn’t work.
Can’t link the exported file to the central file either, so can’t compare model to link.

Any ideas?

more info here:

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That’s the one I tried, but it doesn’t say anything about a central model and I also can’t get that script to work.

open your central model, creating a local file thats detached, name it 8-8-2019…rvt