Slicer from Bridge table not filtering tables correctly

Hi, I have spent quite some time to resolve this but no success.

I've got two similar tables (but due to business reasons, cannot combine them, and need to show them as seperate tables). I am using a bridging table to filter these two tables but the tables are not filtering properly.

Table 1: 

Table2: 

Bridge table to filter both

Measures

isfinal = if(Sum(Table1[UnconfirmedCount]) = 0, "FINAL", BLANK())

IsFinal2 = If(SUM(Table2[UconfirmedCount]) = 0,"Final", Blank())

Bridge table filter not filtering class correctly. Any help will be highly appreciated. Thanks.

Relationship/Model

 

Desired Result:
When I select A in the bridge class slicer, only A displays in the matrix visuals and so on.