MT4 Lost Horizontal Line Function - Any Clues Why?

Something is askew with my MT4. I can place a horizontal line on the chart. But when I change time frames it disappears on all time frames including the original timeframe. Can't put in my S&R lines. Anyone have any idea how to resolve this issue. I'd be grateful.

You probably have an EA or indicator attached to the chart that deletes all graphical objects when you change time-frames. Check on a chart with no EA or indicator attached.

You've probably added an indicator to your template recently that is causing this. Try deleting them one by one until you find the offending indicator. I had the same problem until I found the cause. As I like this indicator I just live with it.

That's just it. The only indicators I'm using are the standard MAs from MT4. I have no EAs or specialized indys on the charts. It's a weird mystery.

Ooops! You guys were right. I did a have a side bar trend indy that I recently put on. Just deleted it and the problem is solved. Viola! THANK YOU! I am grateful.