When you save a report, use red triangle menu, save script, to data table.
Don't save stand alone reports, as jrp's it saves a new and separate instance of the data table. Handy if that's actually what you wanted, but super problematic in every other way.
When you are saving your work in JMP, the very best way is to save the script to the data table, then save the table.
JMP Systems Engineer, Health and Life Sciences (Pharma)