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اعمل maya duplicate special
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Duplicate Special Options
Duplicate Input Graph

Turn this option on to force the duplication of all upstream nodes leading up to the selected object. Upstream nodes are defined as all nodes with connections feeding into selected nodes.

For example, if A, B, and C are the upstream nodes connecting to D...

A > B > C > D

...and you select D and use the Duplicate Input Graph option, the resultant graph is as follows:

A1 > B1 > C1 > D1

(where A1, B1, C1, and D1 are duplicates of A, B, C, and D respectively).
Duplicate Input Connections

Turn this option on so that in addition to duplicating the selected node, the connections feeding into the selected node are also duplicated.

For example, if A, B, and C are connections feeding into C...

A > B > C

...and you select C and use the Duplicate Input Connections option, then the resultant graph is as follows:

A > B > C and

A > B > C1

(where C1 is a duplicate of C).

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