To add a long term Daily MA (in this case EMA) to an intraday chart...
...use the MPD (Mixed Periodicity Data) indicator. Setup the indicator as seen below...
Click the Indicator Preferences button to setup the EMA settings as seen below...
Mixed Periodicity Data (MPD)
The Mixed Periodicity Data Indicator (MPD) gives the user access to different periodicities of data than the periodicity of the underlying instrument or scan. The MPD preferences ask for both a periodicity and the data (price) from that periodicity that will be displayed. MPD essentially loads data of another periodicity, the right-aligns it to the data of the underlying instrument or scan. The MPD data will not generally reflect the date/times show in the horizontal scale along the bottom of the chart. MPD should be consider on it's own scale.