How to rename a filter option value
If your products have a tag material-Merino-Wool and you create a tag filter option with prefix material-, the value showing on the frontend will be Merino-Wool
What if you prefer the frontend value to be Merino Wool instead Merino-Wool? In this case, there are 2 solutions to help rename this filter option value:
Option 1 (Recommended): Update database in the Shopify store

Option 2: Use the Merge feature
Set Current values with your current filter option value, which means material-Merino-Wool
Set Merged value with the one you want to show on the frontend, which is material-Merino Wool
Click the Save and Save merged values buttons

If your filter option uses All values for Option values, you don't need to modify anything. Otherwise, if it is Manual, you need to add the new merged value to the manual values list:

If you have a lot of filter option values to change, contact support@boostcommerce.net for better assistance