I ask because I have considered shipping my skates for sharpening, but didn't think I could remove then reinstall the blades, because of the questions above, and obviously I know with other brands such as Risport that have leather soles, it wouldn't be possible to remove the blades more than once or twice.
Some of us have removed blades more than once or twice on leather soles. You try to be very careful not to strip the hole's threads, by overtightening. If you do strip them, you need to fill the hole with something first, like a wooden dowel, or a strip of leather, or "Shoe Goo" - though Shoe Goo takes a few days to set.
It is quite possible to do it wrong. Which is one of the reasons why many people use good experienced techs - but I assume you want to mail your blades because you don't have such a tech.
But Edea soles may be very different, because of the material, and because they are thin.
Edea sells
these plugs, which might help if the holes are too loose - but I have no Edea skates, and can't be sure. Edea says they are intended for different model blades with different position holes. It doesn't mention re-using the same blade and holes. I just found a post in another forum that mentioned using glue with the plugs, but it didn't give detailed directions.
If no one else knows better here, perhaps you can contact Edea for suggestions?
Some people have two pairs of boots & blades, so they can mail one pair at a time to be sharpened.