I hope you are entering into MT as XRE:CA (or XRE:TO), right? Its better to use MT symbol format.
As for the data, its a Yahoo issue:
http://finance.yahoo.com/echarts?s=XRE.TO+Basic+Chart&t=1d#{"showArea":false,"showLine":false,"showOhlc":true,"lineType":"bar","range":"max","allowChartStacking":true}
If you set it to Bars, and set it to max, you get back exactly what MT is showing.
Switch the symbol to MT format, then try backfilling with Google