I found (and fixed) the problem.

The PersonaBarMenuPermissions table only had 14 rows.  I couldn't do a direct import from another database because the roleIds did not line up.

Here's the query I wrote to fix the problem which uses a clean DNN 9.2 install as a template to determine which permissions are missing.

insert into BrokenDNNSite.dbo.PersonaBarMenuPermission
(
   PortalId
  ,MenuId
  ,PermissionId
  ,AllowAccess
  ,RoleID
  ,UserId
  ,CreatedByUserId
  ,CreatedOnDate
  ,LastModifiedByUserID
  ,LastModifiedOnDate
)
Select
   0 PortalId
  ,pbm.MenuId
  ,pbp.PermissionId
  ,1 AllowAccess
  ,r.RoleID
  ,NULL UserId
  ,1 CreatedByUserId
  ,'2018-05-23 09:46:45.547' CreatedOnDate
  ,1 LastModifiedByUserID
  ,'2018-05-23 09:46:45.547' LastModifiedOnDate
  --,pbm.ModuleName
  --,r.RoleName
  --,pbp.PermissionKey
from 
  CleanDNN92Site.dbo.PersonaBarMenuPermission pbmp
    join CleanDNN92Site.dbo.PersonaBarPermission Dpbp on Dpbp.PermissionId = pbmp.PermissionId
    join CleanDNN92Site.dbo.PersonaBarMenu Dpbm on Dpbm.menuid = pbmp.menuid
    join CleanDNN92Site.dbo.Roles Dr on Dr.RoleId = pbmp.RoleID

    join BrokenDNNSite.dbo.PersonaBarPermission pbp on pbp.PermissionKey = Dpbp.PermissionKey
    join BrokenDNNSite.dbo.PersonaBarMenu pbm on pbm.ModuleName = Dpbm.ModuleName
    join BrokenDNNSite.dbo.Roles r on r.RoleName = Dr.RoleName
Except
--Intersect
Select
   PortalId
  ,MenuId
  ,PermissionId
  ,AllowAccess
  ,RoleID
  ,UserId
  ,1 CreatedByUserId
  ,'2018-05-23 09:46:45.547' CreatedOnDate
  ,1 LastModifiedByUserID
  ,'2018-05-23 09:46:45.547' LastModifiedOnDate
From
  BrokenDNNSite.dbo.PersonaBarMenuPermission