"Update Name Mapping" feature in TC

Hi Guys,

I have mapped few object into the Name Mapping. From the Object Spy all the mapped object highlighted. once closing Object Spy and trying to highlight object from Name Mapping. Objects are not hightlighting. one pop-up appering and says - "Update Name Mapping"

I have select a option (Drag/point and fix) and show my desire object (Which was already mapped but not highlighting) click on Next Button .

Its showing Error- parent object hierarchy of the object does not match .......Remap .

I had remap object again - this was followed same hierarchy and hightlighting from "object Spy" but once close object spy - again mapped object not highlighting.

I did not understand -what is happeing. why mapped object are not highlighting and why "Update Name Mapping" is showing error.