Be careful. When they are blooming size, they can be fussy about being re-potted. Soak the roots for about an hour before removing it from the pot, carefully remove the old medium so that the roots aren't hurt, then hold it in the pot and carefully place the DRY medium around the roots. Don't water it for a day or two to let the roots heal and then it should be perfectly fine to water. If you have a seedling heating mat, it would benefit the ses. to be put on it for a few weeks to help stimulate root growth (unless it is already warm where you live). I wouldn't fertilize or move it until it has a chance to begin growing new roots.
These definitely don't like being re-potted once they reach maturity but by following the 'Angraecum Potting Rules', you should be okay.