OneDrive Archival of Unlicensed Users

The change enforcing archival of unlicensed OneDrive users after 93 days was announced in January of last year but seems to be hitting tenants very gradually.

https://learn.microsoft.com/en-us/sharepoint/unlicensed-onedrive-accounts?WT.mc_id=365AdminCSH_spo

I'm curious what other organizations are doing to tackle this change and how widespread the rollout has been so far. 

• When the change was announced, did your organizations do anything to prepare? 
• For those of you who are already seeing archival in your tenant
  • When did it actually begin? 
  • Particularly for very high volumes of unlicensed accounts, how are you handling this? 
  • Have you had any luck with Purview content search and export for retrieval of files?