A TGraph object created with the Graph Toolbar on a Pad can be totally moved (when the mouse on the Graph become a cross), however after saved this Graph to a .root file and then Draw it again on the Pad, it can not be moved totally, only can be modified(change the position of one of the data point by mouse). Even a TPolyLine object behaves the same way. Is there a way to move it totally even after be saved to a file?
I cannot reproduce your problem. Could you send a xx.root file containing a TGraph, or TPolyLine or both that you cannot move when reading the object from the file?