I assigned a MFG pn to a bunch of cables. Then I changed some of the data in that MFG pn. The new info doesn't reflect in the existing cables. How do I reassign the MFG? Can I do in all at once? (If not what a pain)
What information changed on the Cable? If it was metadata, you can re-push that info by going to Process>Update Data and select the Cable information to re-push the updates into the project. If you added/changed the Cable cores or adjust the Reference itself, that you'll have to do repeatedly.
Only you have to do is, try re-editing metadata, if it doesn't work properly then you have to go Setting>Process>Update Data and update the Cable information in your system settings. Try doing it again and again if the problem still reported.
Retrieving data ...