Engrams don't upgrade if you meant store up engrams before the update/DLC release. They'd still from what I understand decrypt into lower light pieces based on the data of when they were collected. [b][u]Sorry my advice/info was so incorrect[/u]. Did they change this at some point because I had always heard an engrams stats & decryption were set at the moment you acquired it, which is why I thought I recalled people who collected engrams prior to TTK were unhappy as I think it decrypted to year 1 stats after the DLC expansion dropped. I could be wrong. Considering I mainly get green engrams after RoI I wish I had saved up myself all things considered.[/b]