In JMP 18, there is a Update Table script that is provided in the imported JMP table. If you run this table script, AND the # of columns exactly matches the prior table, it will update the data in place in the JMP table. However, it will not be applying your cleaning or analysis actions so it may not be useful. Alternatives that I can think of, which are not simple, are:
1. Use JSL file functions and scheduling to read the Excel file information to detect when it is changed on disk, then trigger your actions
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2. Use Visual Basic for Applications within Excel to drive your operations on JMP when the data changes in Excel. This essentially reverses the flow where Excel becomes the driving application.
Regards,
Brian Corcoran
JMP Development