Hi,
I work in Maximo support for IBM. I searched the usual places and do not find an exact match for the problem you are having. I found a close one when using the Calibration add-on but it was fixed in the 7.1 days, even before your 7.5 version.
If you have an extended support contract you could open a Case with us
You could also turn on logging using the Logging application. Highlight the 'application' Root Logger in the top part of the screen and then use New Row in the Logger part at the bottom to add one for Job Plans. Then look in the SystemOut.Log to see if you capture the error and perhaps it will give you a clue as to the problem. It never happens for me when I do that but I can then have development analyze it.
cheers .................dick
#Maximo#AssetandFacilitiesManagement#Support#SupportMigration