I've successfully uploaded several templates as per this post.
However, the add template button does not appear to be active when editing the flavor:
We are on Personas 3.0 with SP3 (kernel release 742, kernel patch 300 which is not the latest).
The SAP system is ECC6 EHP7 on HANA and I'm using the 740 GUI on Patch 7.
Thanks in advance.