Upgrading armor to 8 Energy and dismantling them used to offer 8 Enhancement Cores, and with the cost of 3 Enhancement Cores and 1 Enhancement Prism this effectively worked out as a 1 Prism to 5 Core conversation, and they only offer 6 which is a 1 Prism to a 3 Core conversion. If this really got nerfed you guys at Bungie should really walk that back because it's kind of goofy. 1 Prism for 5 Cores is a -50% trade down value as it is, no way this can be problematic.