Cisco NX-OS: gNMI Replace fails with "child cannot be added to deleted object" when replacing nested PIM StaticRP multicast groups

Problem Statement

On Cisco NX-OS, a gNMI Replace operation on the PIM rp-items container fails when changing the multicast group of an existing Static RP. NX-OS DME processes the Replace as a delete-parent + add-child within the same transaction, then rejects the child add because the parent is seen as deleted in that same transaction context — violating gNMI Replace atomicity semantics.

Error:

rpc error: code = Internal desc = descr:internal processing error
[error:operation-failed msg:child (Rn) cannot be added to deleted object
Rn=rpgrplist-[226.0.0.0/8], Commit Failed]

Platform: Cisco Nexus 9332D-GX2B (N9K-C9332D-GX2B)
NX-OS: 10.6(2) [Feature Release]

Steps to Reproduce

1. Enable PIM:

gnmic set --replace-path "System/fm-items/pim-items" \
          --replace-value '{"adminSt":"enabled"}'

2. Set initial RP with group 225.0.0.0/8:

gnmic set --replace-path "System/pim-items/inst-items/dom-items/Dom-list[name=default]/staticrp-items/rp-items" \
          --replace-value '{"StaticRP-list":[{"addr":"10.0.0.1/32","rpgrplist-items":{"RPGrpList-list":[{"grpListName":"225.0.0.0/8","bidir":false,"override":false}]}}]}'

3. Replace with new group 226.0.0.0/8 — FAILS:

gnmic set --replace-path "System/pim-items/inst-items/dom-items/Dom-list[name=default]/staticrp-items/rp-items" \
          --replace-value '{"StaticRP-list":[{"addr":"10.0.0.1/32","rpgrplist-items":{"RPGrpList-list":[{"grpListName":"226.0.0.0/8","bidir":false,"override":false}]}}]}'

# ERROR: child (Rn) cannot be added to deleted objectRn=rpgrplist-[226.0.0.0/8], Commit Failed

Expected Behavior

gNMI Replace should atomically swap the old group with the new group in a single transaction.

Vendor Acknowledgement

Cisco TAC case opened: 700650417

No source file or test is identified in the issue. Start by running the listed gnmic Replace commands against the specified Cisco NX-OS platform and review how the repository handles gNMI Replace requests; done means the nested PIM StaticRP group changes atomically without the deleted-parent error.