Straight from the Dev Tracker summary post:
Systems Designer David Hunt let players know that many new Crafting schematics in 1.2 (on PTS) are available only via reverse engineering. He also reassured us that customizations to gear made pre-1.2 will be retained, and let everyone know that in 1.2 and beyond, you’ll be able to move new endgame gear set bonuses by removing the armoring mod. However, this change won’t be applied to older endgame items, just to those new in 1.2 and beyond.