My apologies for the delay. I was able to borrow the Profinet device from the customer to test on my own setup. I wasn't able to recreate the behavior they were seeing. I suspected there may have been an issue with the original version update we performed on the core, so I reimaged their core with a micro SD card and this has fixed their problem. When we originally upgraded their core from 1.12 to 1.20 we updated all of the system apps with the web UI, so it would appear there is some issue with that method.
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