Edit > Transfer Attribute Values

Populates the attribute values of one object (the target) with the attribute values of another (the source) for for all identically named attributes that the source and target share, over all frames in the timeline.

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Transfer attribute values between assets

Edit > Transfer Attribute Values >

Attributes: If From channel box is turned on then only attributes currently highlighted in the Channel Box are transferred.
Values: If this option is on then attribute values are duplicated from the source object to the target object. If it is off, then these values are referenced.

In connections

If this option is on, incoming connections from other external nodes are transferred from the source asset to the target object using either Share with source or Transfer from source.

Share with source: Maya creates new incoming connections from the external node to the target object. Thus, changing the external node affects both the source object and the target object.
Transfer from source: Maya deletes the incoming connections to the source asset and creates new connections to the target object. Thus, changing the external node affects only the target object.

Out connections: If this option is on, then all outgoing connections to other nodes are moved from the source object to the target object.
Relationships: If Transfer parent/child relationships is on and the source and target objects are assets that have identically named published parent or child anchors, then the parent/child relationship is transferred from the source asset to the target asset.
Rename: If Rename target asset is on, then the target asset is renamed with the source asset’s name. The source asset is renamed with an -Orig suffix.