Dirtying a specific attribute from a prim in a scene index

Community Hydra
1

Hi,
I have a retained scene index which holds a single prim (an xform prim) which has a transform and visibility attributes.
I was wondering how to set one of these attributes as dirty, so that any filtering scene index is notified of the change.
The only working way I have found so far is to remove and add again the prim again, which I think, is not the right way.

I’ve been trying to do

//Set the transform prim as dirty so it gets recomputed
HdDataSourceLocatorSet locators;
HdDirtyBitsTranslator::RprimDirtyBitsToLocatorSet(HdTokens->transform, HdChangeTracker::AllSceneDirtyBits, &locators);
_retainedSceneIndex->DirtyPrims( { {_parentPath, locators} } );

Or

//Set dirty this field in the retained scene index for the parent prim
HdDataSourceLocatorSet locators = {HdDataSourceLocator(HdXformSchemaTokens->xform)};
_retainedSceneIndex->DirtyPrims( { {_parentPath, locators} } );

But none of them triggered the Get function from the filtering scene index observing this scene index.
The way I add this primitive is by doing :

//Arrays of added prims
HdRetainedSceneIndex::AddedPrimEntries  addedPrims;

HdRetainedSceneIndex::AddedPrimEntry parentPrimEntry;
parentPrimEntry.primPath      = _parentPath;
parentPrimEntry.primType      = HdTokens->transform;
parentPrimEntry.dataSource    = HdRetainedContainerDataSource::New(
                        HdXformSchemaTokens->xform,
                        HdXformSchema::Builder().SetMatrix(HdRetainedTypedSampledDataSource<GfMatrix4d>::New(_parentMatrix)).Build(),

                        HdVisibilitySchemaTokens->visibility,
                        HdVisibilitySchema::BuildRetained(HdRetainedTypedSampledDataSource<bool>::New(true))
);               
addedPrims.emplace_back(parentPrimEntry);
//Add new prims to the scene index
_retainedSceneIndex->AddPrims(addedPrims);

Thank you.
Regards,
David