Hide a value from a Slicer without filtering

Hello,

I have two tables connected via a Many to one (*:1) relationship.

On the Many-table there a value that doesn't match the One-Table, this causes a (blank) value to show up.

Example with (Blank) Value:

I understand that I can use the page level filter or a different slicer to filter out the (blank)

My problem is that I need to hide (blank) without making the values on Table1 to be filtered out.

Anyone has any ideas?

Thanks advance!