Shifting midi events

I have recorded piano in the midi key editor of C6. When I play along with it (Not recording) the highlighted midi notes previously recorded move to the new play positions. I can’t figure out how to stop this or even why anyone would want this to occur. Can anyone tell me how to turn this facility off please. Thanks in advance.

Do they move to new positions (i.e. a different time), or move to different notes, but at the same time positions? If it is the latter, then it looks like you have the MIDI Input button activated on the extended toolbar.

Many, many thanks Vic, that did it.