If you run the tool manually on the machines in question are you having the same issue? I don't believe Lansweeper is doing anything like that with the dates, that being said Delprof2 has not been updated for some time. Unsure if compatible with the newer Windows 10 versions or if they are reporting it differently.
If you can still run it manually and get the required results then something has changed, just trying to narrow that down is the hard part.