Yeah, it would be useless due to the compatibility between both software. I saw something related to that on the documentation so better stick with Illustrator and try if I can fix it on my own.
Also, speaking of the github docs, while reading the part file format section, I found this:
The most annoying quirk with Illustrator is that Illustrator defines a pixel (“px”) as 72dpi, whereas in the SVG standard, a “px” is 90dpi. So when you save images from Illustrator, if you want them to show up at the size you expect in Fritzing, save the image in units other than px (and note that if you leave out units entirely, it means “px”). Fritzing does try to correct for this problem, but your safest bet may be to open your Illustrator-based SVG in a text editor and hand-modify the width and height attributes by dividing each by 72 and putting “in” (meaning inches) as the units.
After looking at it, I set my file preferences on inch units and changed the dpi from 72 to 90 as stated above. So far, it has worked as my piece has the same size as the arduino mega breadboard. Does was that you meant when you do the “rescale” step previously mentioned on my other topic?
Then the schematic view should be huge than the current one. Not sure what to do, since there are like… 4x3x6 = 72 approximately GND pins plus another 72 for Vcc plus 72 related to the digital / analog.
The right way to do it is finish the parts editor but that is a much bigger task.
I will not finish it right now, been handling some house-related stuff so I would focus on another simple part meanwhile. This weekend I will try it for sure