You can remove items from a merged group at any time without deleting them from your inventory. This guide explains how to remove an item from a merged group.
Note: Removing an item from a merged group doesn't delete it from your inventory.
Step-by-step instructions:
1. Navigate to the Merged page to locate all merged items.
2. Click to expand the merged group details.
3. Click Remove on the item you want to unmerge from the group.
4. Click to unmerge the item.
The item has now been removed from the merged group and can be managed independently.
Read more: Merging Inventory Items