So it's been five days since I opened a support request with Smartsheet and not one peep from their technical support…so I'll see if the Community is more responsive.
Several staff were deactivated, however, their ownership of Workspaces and Sheets were not reassigned and the Sysadmin that deactivated the accounts doesn't have access to any of the Workspaces or Smartsheets. (Our experience is nearly spot-on for this:
I'm a Plan Asset Admin and we've also tried what is in the url below, but it doesn't work. I was sent a link, but it results in a message that says "you need access". https://help.smartsheet.com/articles/2483118-asset-ownership-overview
Otherwise, I've crawled through the Community posts and haven't found a workable, straight-forward solution. Our Tax department uses Progress (Citrix) Sharefile and it's so much easier to manage…between the lack of support, convoluted user and management interface and now the billing debacle, I believe the ultimate solution will be to get our Audit department to migrate to Sharefile. Cheers and thank you in advance for any suggestions.