Stop time period field from affecting first sale date measure

[hcr4]

I created a measure which when used with a 'Products' filter gives me a single value of the first date that any product x was sold to any customer y in table. If I add 'Period' to the table, I then get the values for the first date that product x was sold to customer y within each of those periods as below:

I want to avoid this. I want the values for the measure across these periods to be repeated as duplicates of the very first sale date of product x to customer y, not the first sale date within those periods (or weeks, months, years etc). So in this case the date '08/03/2019' would be repeated across the periods. Is there an easy way to do this?

Thank you.

[tamerj1]

Hi @hcr4 
You can add REMOVEFILTERS ( DateTable ) inside CALCULATE