I believe there is a bug in the BTM data that makes it suggest the four crafted wands as possible DE. It's possible it a bug in Enchantrix but none of the four crafted wands are listed in DisenchantList.lua.
The four item IDs that need to be excluded because they cannot be DEed even though they are "magical" are 11287 (Lesser Magic Wand), 11288 (Greater Magic Wand), 11289 (Lesser Mystic Wand) and 11290 (Greater Mystic Wand).
I'm not sure how the BTM data works but the wands are listed in the BtmScan.ConfidenceList table.