I moved it over to DSP as per my answer on your previous question.
At the time I looked at it, it had four close votes for being "not constructive". As highly voted as it was in such a short period of time, it doesn't do anyone any good in having it closed as you'll get no further input to your problem and it will just sit there either as an eye-sore or until it is possibly deleted.
That said, if you're asking in general how to have migrations reversed you can do the following (in no particular order):
- Flag the question on the destination site for moderator attention
- Bring the question up on the destination site's meta
- Flag the question on the source site for moderator attention
- Bring the question up on the source site's meta (as you've done here)
It should be stated that while you might think a question fits the SO spirit, if it's closed, it's a pretty good indication that it doesn't fit the SO spirit.
As per your comment regarding traffic, just because you have a high amount of traffic on SO doesn't mean that it's a good fit, or that we are inclined to keep it on SO as per your wishes. Not every question has a home, and your specific question was being told that Stack Overflow is not the home for your question.
Additionally, more traffic doesn't mean you'll get a better or quality answer. It only means you get more traffic.
As per Oded's comment, one would think you'd want to get a quality answer to your question, not many answers which aren't of high quality (and to be quite honest, I didn't see high-quality answers on your question to begin with).
Finally, as per the section of the DSP faq titled "What kind of questions can I ask here?":
Signal Processing - Stack Exchange is for practitioners of the art and
science of signal, image and video processing.
Your question is a perfect fit for DSP. That's not to say that it couldn't be a fit on Stack Overflow, but as mentioned before, with four close votes for "Not Constructive", it was being decided by the community that it was not a good fit here, so best to move it to a place where it is a better fit.