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Frame Generator has no 'frame edited' event. You stitch one together from OnActivateCommand, OnTerminateCommand, OnDelete, OnNewOccurrence, OnOccurrenceChange and OnCommit — plus two magic command names and the literal string 'Change Frame' as a transaction-name match. Here's the actual sequence and the kBefore/kAfter ordering you have to respect.
How Autodesk Inventor's Frame Generator stores frame members: the com.autodesk.FG attribute set, the Frame.Skeletons XML payload, three different IDs and which one survives a profile change, and why attribute lookups need GetNativeOccurrence() rather than the proxy you receive from events.
Autodesk's compatibility note for Inventor 2027 says existing .NET 8 add-ins should keep working without recompilation, and for most add-ins that's accurate. The exception is paid App Store add-ins that call AdWebServicesWrapper to verify entitlement — free add-ins typically skip that check, so they're unaffected. The wrapper was renamed and retargeted to .NET 10 in 2027, so paid App Store add-ins do need a migration. Here's the conditional TFM / per-version reference / manifest-gate pattern I rolled out across 7 add-ins.
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