I cannot progress the "matching damage defeats" part of the Forgotten Power seasonal challenge from Season of the Witch. I had the 53 defeats I think from when I was actively playing the season and wanted to now finish it in this current season we're in. I thought it was because I didn't have the artifact, so picked that up and nothing changed. I tried running a Void warlock subclass and using Corrective Measure and Funnelweb, as well as my void subclass abilities. Nothing changed. I switched to my arc warlock subclass, using Ikelos SMG and Eleatic Principle & my arc subclass abilities/super but this did not progress either. Is the wording and actual task of completion different to what it was? How can I complete this?