I have no idea, actually I'm assuming you are soaking them to wake up dormant bacteria or fungus spores, so my initital thought is that you might risk fungus or bacteria multipling in the favorable environment to a point where their by-products could harm the embryo in the seed. Actually I don't believe this my self, but it's a thought
Another side-effect could be that the sugar water starts the germination of the seed prematurely which perhaps could make it vulnerable to peroxide or bleach - whatever you chose to sterilize with. On the other hand protocorms are usually only visible after a month or so, so 24hrs probably doesn't do much..
I'd say let them soak if you don't feel up to sowing What's the cross?? And did you check the seeds under at microscope to see if they are viable?