We've moved multiple eco-sol printers without flushing the lines, no issues there. Our tech always advises us if it's going to be without power for more than 3 days, flush the lines and put in cleaning cartridges. Anything less than that, we do a very thorough cleaning, and squirt a lot of cleaning solution into the caps, and then lock the heads, yank the inks, we put a clean cloth in the drain hole, and away we go! We're always careful not to tilt it or bump it, and so far we've had zero problems.