I would still mention it, just move it to personal history. If you havent gotten ITA yet, as @joelfernandes says, you can change it up all you want. But make sure to mention your work in personal history, then you're still showing it, but are not claiming points for it and thus don't need to provide documents for it.
Thanks mate! How about making changes in e-APR ... so I mentioned X employment before ITA but I wish to move that to Personal history rather than employment history now during the e-APR. Given, this doesn't impact my CRS score at all, is this okay to move it?
Do I need LOE for this as well?