Greetings. I'm a decently geared discipline priest with stats focusing on mastery and a balance between crit and multistrike. So far I've been running with Mark of the Shadowmoon (chance to proc 500 spirit). Would it be worth enchanting my weapon with mark of the bleeding hollow (chance to proc 500 mastery)? My base stats are 31% mastery;1100 spirit and 9.5% both crit and multistrike. I've checked the armory for the top disc priests and they still run with mark of the shadowmoon. I would usually try something new myself to test it out but the materials are too expensive to waste. Hope for great input from you guys.

I wanted to get a definitive 100% answer on the following:
 
If I enchant an ilvl 630 Steelforged weapon (crafted through Blacksmithing), will the enchant stay on it when I upgrade the weapon? 
 
Most people say "it should" or "I think so" but I'm hoping someone can either verify with personal experience or with a reference.
 
Thanks!