From what I gathered from your descriptions, you need a script that will take data from a displayed SVG path and store it as a Json compatible string for a database to later use via the addSvgElementfromJson function in SVG-edit, which requires the DOM element, the line attributes and the curstyle.
If that is correct, I can have it as soon as 1 day, and as late as 2.
I almost take joy in poring through documentation, so that would be where I would begin, and if there is not already a present function, I will write a script to take the data itself.
I hope to hear from you soon.
Thank you.