here ya go ...from the help file.
Dissolving a Mirror Component Feature
You can dissolve a mirror component feature to make its components independent, so you can move and rotate them.
When you dissolve the feature, you have the option to recreate mates in the top-level assembly.
To dissolve a mirror component feature:
- In the FeatureManager design tree, right-click MirrorComponent and click Dissolve Mirrored Component Feature.
- In the dialog box, when asked if you want to recreate mates in the top-level assembly, click Yes or No. MirrorComponent disappears from the FeatureManager design tree. The components appear in the tree like any other components. For opposite-hand versions, the external references to the seed components are maintained.