Hi Pablo,
I believe that problem is that you are not including AIRMASS as a specified detrend parameter, which Rob is expecting, when you are using AIJ to create the database upload file. See number 8 in Section 3.0 of the user guide for the AIJ macro that creates an AAVSO Exoplanet Database upload file:
https://astrodennis.com/AIJMacroHelp.pdfBy specifying AIRMASS as a detrend parameter, the macro will pull the values from your AIJ measurement table when it is creating the upload file.
Let me know if this works.
Dennis