BPC 10 NW - Report shows incorrect member property

Hi dear BPC experts,

I am using BPC 10 for NW, and facing an issue which only occurs in one report.

When I check "PERIOD" property on time dimension for member 2015.N1, it shows the correct value "TOTAL".

However, when I open this particular report, it gets wrongly configured.

I check then the same member property through "EPMMemberProperty formula in excel, and it displays the value "YEAR" (which is rather odd, since that's the value for another property of that same member).

Has anyone already faced this issue? Can you please help?

Many thanks,

AB.