Guidelines or documentation on converting an InTouch for System platform application to OMI

I'm not aware of anything being available at this time.  It is a bit of Apples and Oranges, and not a simple process.  InTouch can hold the tags, alarms, history, scripting, etc, but OMI cannot.  In that case there is some Application Server setup that is needed.  For systems where AppServer is already the provider of tags/history/scripts/alarms, it can be a bit easier, but there would also be the opportunity to make use of the built in navigation features of OMI, and possibly the situation awareness graphics.

If you do not have any experience with OMI yet, I would recommend taking a class so that you can see the basic idea of how your system is expected to be built.  Then, you can begin to decide how to get that data you need into that type of setup, and what graphics need to be made, etc.

As David says, the first thing to do is to get training on how OMI works, because the way applications are developed is totally different from how they are developed in IT4SP. Depending on how the IT4SP application was created, this migration to OMI can be relatively simple or it can involve a total revamping of the graphical part. If you already have all the graphics as Industrial Graphics and all the screens created as Industrial Graphics, you really have a lot of work done. The next step would be to link all this content to the different assets if you don't have it that way already and using the default navigation it should be pretty straightforward.

The first project or two with OMI is usually a bit traumatic, because naturally we try to develop as we would in InTouch and that generates a feeling of frustration, but once we understand how it works and we really adapt to its way of working, we see that creating applications with OMI is really much simpler and faster.

There's no option to convert a whole InTouch application to an OMI application. You can, however, convert InTouch windows to industrial graphics and then use them to build you OMI view application. More on that here: docs.aveva.com/.../315640.html