Migrating Leviton switch

Greetings. I was migrating Leviton switches, mostly d26hd w/ matter firmware added. I successfully migrated 6 devices but on #7 my fat fingers inadvertently interrupted the migration and it failed. I retried migrating but there was a failure to pair. After several attempts I decided to move to #8 but that failed to pair. I’ve hard reset the switch and tried again but the result is the same. I’ve restarted the matter server, ha & rebooted the router. There are no apparent remnants of #7 anywhere. The light functions w/ the Leviton app perfectly as do all the other Leviton devices. Any ideas on how to move on?