Hi
After looking into your response, I tried to reproduce the scenario in my system. However, the master data maintained using RSDMD (with or without nav attributes) being reflected immediately in /sapapo/mc62.
Have you checked your infoobject and master data activation status? May not be a valid question as you already mentioned that other InfoCube can show the added value.
Probably, executing report RSDDS_AGGREGATES_MAINTAIN might fix the issue. Pl check.
Thanks
Ankit