Hi,
I'm new here, hence my lack of references, however I have been working with Joomla since 2008 and I'm therefore very familiar with all the versions as well as many extensions, including JomSocial.
Lately I have been working on a number of migrations.
In order to completely understand the task at hand I'd like to know what versions of JomSocial you are using in each environment. It would also be helpful to have the list of extensions you are using.
Regarding templates, did you make any overrides or hacks?
For this type of project I like to use an iterative approach whereby I clone the environment, run my scripts, test, fix the issues, document, and validate with you. There might be a couple of iterations. When the process is completely defined and tested we can run it on a fresh clone of the environment to make sure we have all the latest updates and switch the domain to point to the new clone.
I can start working on this right away and that would be my only project until completed. I will also give you a 30 day period in which I would fix any issues that may arise.
I look forward to working on your project.
Regards.
Xav.