In an effort to migrate from NT to Investor RT I've not been able to replicate a few remaining favorite indicators. Any help in doing so would satisfy several unsuccessful days trying to figure it out myself and therefore would be extremely appreciated. See my contribution below...

Stochastics... (see attached)
1). I've combined 2 Double Stochastics Zero Lag Optimized indicators w the DSTIen set at 5 and 10 (price action is set at 5 for both). Link here...
2). To this I've added the "Stochastics Momentum Index" indicator. Link here...

Auto Trend Line...
It would seem simple to do but I can not get the auto trend lines in IRT to plot the same as those in NT. I like the longer straight trend lines that hold their position long enough so I can see them converging as in the attached pic. As you can see I have 10 auto trend lines w progressing strength settings. I've colored them according to strength.

As a contribution...
Watch the Shadowtraders.com website on how to trade multiple trendlines. Example... when they converge (begin to cross) in the direction of the trend the trend strengthens. When a trend line crosses in the opposite direction the trend strength weakens causing an inversion effect (support is now resistance visa versa). Trade it and it w begin to make sense.

Any help migrating these indicators to IRT would be very very much appreciated!

Is there a .zip file for these NT indicators available?

Let's first look at the Stochastic Indicator. To get compute a double-stochastic, you would create a custom indicator with syntax:

SLOWD(FASTD)

That will compute the FASTD component of the Stochastic and then run a SLOWD on the result. You'll have to customize the periods within those two tokens appropriately. Here is a chart definition: DoubleStochastic_130913073100 | ChartHub

So I believe that is the basic double smoothed stochastic. I know there were a few more adjectives involved. If you have any more details on how the calculation of what you need differs from the standard double-smoothed stochastic, let me know and we'll go from here.

I'll do some investigating on the automatic trendlines and get back to you on that.