I don't know if this will work or not, but I heard that it did for TTK's April update. I have about 10 gold engrams and quite a few legendary and sublime engrams stashed in the vault and postmaster, waiting for the new expansion to turn in and get new exotics (especially warlock legs). I don't plan to cash them in immediately, but will wait until I level up a bit and then turn them in. If it works, I'll have some shiny new stuff; if it doesn't. I'll have some exotic shards which I sorely need. Win-win. Anyone else going to try this? EDIT: 24 hours later, most replies are of the belief that it won't work the way it did in April, due to that being an update rather than an expansion. This may very well be, but I see nothing to lose from trying. I'm still sticking with my plan, since even if the engrams decrypt as old gear, they [i]should[/i] (fingers crossed) be consistent with my new, higher light level. They will also rapidly boost my cryptarch level and yield new gear that way. I've even started letting blue engrams stack up a bit at the postmaster. Thanks, everyone, for the replies.