Hi Luisa,
Thank you for sending the file.
In SAM 2020.2.29, the Detailed PV model runs a simulation over the analysis period to better model module degradation. It turns out that the Combine Cases macro was written to work only for simulations over a single year, which was the behavior in earlier versions of SAM. We will need to update the macro to fix the problem, which we will do for the next software update.
In the meantime, I posted instructions for a workaround on the SAM GitHub repository:
github.com/NREL/SAM/issues/282
Best regards,
Paul.