From the 4/6 dev meeting discussion (https://docs.google.com/document/d/1URPG6SLG481Y7DDAajjVtedKjS5pwIQ41UOhwSQYbhk/edit#bookmark=id.fmgf66nh086m), stageOut does not make sense for Uses of type input.
From the 4/27 dev meeting discussion
(https://docs.google.com/document/d/1URPG6SLG481Y7DDAajjVtedKjS5pwIQ41UOhwSQYbhk/edit#bookmark=id.yyslk8z35s83), registerReplica does not make sense for Uses of type input.
Because the stageOut and registerReplica fields are not required fields in the Use schema, they will just be omitted for Uses with type input by the python API.