You can transfer values and connections from one asset to another using the Transfer Attribute Values option. Maya copies the values from any identically named published attributes from the source asset to the target asset.
To transfer attribute values between assets
+ select the target asset.
All identically named attribute values are transferred from the source asset to the target asset.
Transfer attribute values options
Maya provides a few asset-specific options for transferring attributes. You can access these options from the Edit > Transfer Attribute Values > 
.
You can use the Relationships option to re-parent external objects parented to the published anchors of the source asset to the published anchors of the target asset given that both published anchor names match.
You can also use the Rename option to give the target asset the source asset’s name (the source asset is automatically renamed with an Orig suffix).
Both these options are useful when you want to completely replace the source asset in your scene with the target asset.