[COLOR="DarkGreen"]Sorry Jerremy, I've never grwonthis particular hybrid but....
"normal"? LOL Come now lad, it's an orchid -- they laugh in the face of "normal".
Do they
HAVE to lose their leaves -- no.
Depending on the hybrid, new growth may wait until after blooming is finished before it commenses.
Which growth they flower on can vary. As long as it didn't flower at all the nodes on an old cane, it is possible that it would 'reflower' on the old canes. If for some reason it chose not to flower on a mature cane which has never flowered before, don't fret. Might just be storing up energy to give a really good show next year. [Or maybe it's just being 'ornery'. It is an orchid afterall. LOL]