First, why would you like to have the abbreviation the same as the name? The reason abbreviations exist is that they should be easier to read in complex tables and figures. I do often rename the abbreviation, but to something much shorter thant he anme, such as 'm16im' in your case.
But anyway, the ADAMS/Insight experiemtn file is a xml file. Easy to edit and a with a good text editor you can quickly create a macro that
Search for factor name="
Copy the string after this.
Search for "abbreviation">
Replace the string after this with the copied string.
Using an xml editor could make it even simpler.
Save your file, open insight and open up the experiment.
I was annoyed by this recently, too, so I logged a Product Enhancement request on this with a suggestion similar to yours. I've also created a script that will live here:
but the darned attachment isn't showing up at the moment. (grrrrr). We should have that fixed shortly, but here's how it works (download attached script..):