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LayerManager: Prevent unintended overwriting of unmodified USD layers at Maya save. #4027

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merged 1 commit into from
Dec 6, 2024
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LayerManager: Prevent unintended overwriting of unmodified USD layers at Maya save. #4027

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3 changes: 2 additions & 1 deletion lib/mayaUsd/nodes/layerManager.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1022,7 +1022,8 @@ BatchSaveResult LayerDatabase::saveUsdToUsdFiles()
const auto& allLayers = info.stage->GetUsedLayers(true);
for (auto layer : allLayers) {
if (TF_VERIFY(layer)) {
if (layer != sessionLayer && layer->PermissionToSave()) {
if (layer != sessionLayer && layer->PermissionToSave()
&& layer->IsDirty()) {
if (!MayaUsd::utils::saveLayerWithFormat(layer)) {
MString errMsg;
MString layerName(layer->GetDisplayName().c_str());
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