When we create a new action filter from one dashboard to another by default all sheets present on each dashboard got selected. Mostly action filter will be required to affected some particular target sheets, I have found an easy way to reduce the time of manually "unchecking" all the unwanted sheets(consider my dashboard contains 50 or more sheets)
For simply select any one of the target sheet
Then select all ( CTRL +A), it will be selecting all the target sheets. The uncheck one checkbox will remove ticks from all selected sheets.
Now we have an option to select desired target sheet and save time. Example
If you found my workaround is useful like this question present on the right top corner