C++ model don't reindex in QML after change

I write data model in c++ and use this model in QML code. But this model indexed only when I open the project. After changes in C++ code automatically reindexing is not happening. Any reindexing/reset model actions in Creator's menu also has no effect.

As result code completion of C++ model did not working correctly in QML editor and I have to often reopen project.