rengolin/HPCC-Platform — comment on commit e059ad17a92c2049a6e2cde01bd2fe0fe8fdd252
File: dali/base/dadfs.cpp line 2783
By jakesmith:

Ah, hang on, in both cases, attr is a link counted reference to root->queryPropTree("Attr") (see loadAttr())
So it although it does attr.clear() - it will still commit the changes to root, via the changeMode in unlockProperties

confusing..