Ok, I'm in the office back and can provide snapshots and demos.
First, you can download and install indicator TEST_MA I used to prepare this demo. This is a bar indicator which applied at the chosen price, so it uses, for example open price to calculate EMA but is always drawn trough the middle line of the bar because TEST_MA is a bar indicator and marketscope, in fact, does not know which particular price is used.
The tick indicators (such as MA) are always drawn trough the price on which they are applied. So, EMA(open) will be drawn trough open prices and EMA(close) will be drawn trough close prices.
Compare the values, as I said the open MA just 1 bar forward comparing close MA.
If we zoom the chart with the indicator applied we can see that the open and close MA are shown as the same line, but MA applied to close price looks 1 bar longer. Because the the open price of this period touches the close price of the previous period and the MA(open) == MA(close)[-1 bar] - it is drawn as it is:
Just put TEST_MA as well on the chart and look that TEST_MA is drawn trough the center of the bar and values are the same (see the price scale), only location of the point inside the bar differs!
We can use the TEST_MA feature that it shows both, open and close MA drawn trough the center of the bar and see the following image (I think the exact image you expected):
However, no doubt we can see almost the same picture in case the source does not have open of the next bar equal to the close of the previous bar. Let's take as an example the "market index" indicator (
viewtopic.php?f=17&t=611). Look, the open does not equal close, so, even the regular tick indicators are not equal as for FXCM's data.
I hope this helps. Please feel free to discuss this point. Probably we should think about drawing ANY indicator trough the center of the bar, like, for example metatrader does:
To tell truth, I think nobody knows when and why it was requested to draw the indicators trough the open and close part of the bar instead of the center of the bar, but if it is so confusing, it is probably the good time to make a change.