Database fails to start multi-user post CONV1011, error 13242

Database fails to start multi-user post CONV1011, error 13242
Error 13242 trying to start database after successful CONV1011 Aiarchiver enabled database
Aiarchiver still enabled after successful CONV1011 of an AI Management enabled source database
AI is disabled as part of the CONV1011 routine but not AIMGT
Restored database fails to start multi-user with error 13242
Restored database can be accessed single-user

CONV1011 succeeds without error:
PROUTIL -C describe shows AIMGT still enabled on the PROREST database:
Database Features

   ID   Feature                            Active  Details
  ----  ---------------------------------  ------  -------
     8  After Image Mangement/Archiver     Yes

The conv1011 Major Version database migration utility, disables AI but leaves AIMGT enabled. The AI extent manager daemon cannot be started until after-imaging is started for the database.  Usually, only once after-imaging is started the AI Archiver feature can be enabled for the database to manage AI extent archiving.

Upgrade to OpenEdge 11.7.5 or later where conv1011 disables after-imaging, AIMGT and Replication (when enabled)

Post CONV1011: Depending on the intent of the CONV1011 operation if:

A.  The converted database should be aiarchiver enabled, then:
 
1. Enable after-imaging:
$  rfutil dbname -C mark backedup
$  rfutil dbname -C aimage begin

3. Start  the database with the appropriate startup parameters:

$ proserve dbname [+startup parameters] -aibufs 45 -aistall -aiarcdir <dirpath1>,<dirpath2> -aiarcinterval n 


B.  The converted database should NOT be aiarchiver enabled, then

1. Disable the AI Archiver: 
$  rfutil dbname -C aiarchiver disable

2. Start  the database with the appropriate startup parameters:

$ proserve dbname [+startup parameters] 

Pre CONV1011: Disable AI, which disables dependent features at the same time.

$   rfutil dbname -C aimage end