Editing Filter Values

Your filter should be using a DIM table that has the values you want to show, then it would have a 1:many relationship to your data. It would always show what is in the DIM table. 

You generally should not create slicers and filters using your FACT table. See this article for more info. Basically, design everything as a Star Schema. When I do a model, my goal is to ultimatly hide every column in my FACT table and never use it for visuals, just for data in measures. I try to never use fields in my FACT table for anything other than measures.