So I know this question was asked a long time ago. Since Inkscape is pretty slow through x11 on Mac, I decided to post my solution here in case it helps someone else.
If you have python installed on your mac, you can use this script to modify the svg before you open it in illustrator. Then after you're done editing, basically do the opposite to post the new attr back to the id field. Kind of wonky, but the performance of illustrator made it better than suffering with Inkscape for me -
from bs4 import BeautifulSoup
svg = open('myawesome.svg', 'r').read()
soup = BeautifulSoup(svg)
paths = soup.findAll('path')
for p in paths:
p['inkscape:temp_id'] = p['id']
html = p.prettify("utf-8")
with open("output.svg", "a") as file:
The trick here is to open the original SVG in a text editor and replace the path's with the output of this script. When you're done in illustrator, copy this python script and copy 'inkscape:temp_id' back to p['id'] (the opposite of the first time) and then you're set.
Hope this helps someone out there. I wasted 4 hours today figuring out how to preserve element ID's in illustrator for a project I'm working on and this is the best I could come up with. Good luck!