When xaxis mode : time, mousetracker displays milliseconds, not converted time stamp.

[37davidg]

So the mode : time setting for the axis takes the inputs of the array representing time x-axis, assumes they are miliseconds, and converts them into a timestamp for the xaxis ticks. However, with the mousetrack feature which hovers over graph and prints x,y values of closest datapoint to cursor, the number of miliseconds, not the time stamp is displayed, so the x,y coordinate values are not consistent with the corresponding readings along the X and Y axis - how would I fix it so mousetrack output reflects the timestamp?