Converting an audit enabled database to UTF-8 results in errors 14323, 3970, 3968, 3942, and 1410.

Converting an audit enabled database to the UTF-8 code page results in errors 14323, 3970, 3968 and 3942.  
UTF-8 conversion fails and leaves the database unusable error 3942.

The user performing the conversion has been granted with all 4 Audit permissions (Audit administrator, Application audit event inserter, Audit data archiver, Audit data reporter).

Prior to UTF-8 conversion:

• All audit policies have bee disabled with Audit Policy Maintenance.
• The audit tables have been emptied with "proutil <dbname> -C auditarchive "
• Auditing has been disabled with "proutil <dbname> -C disableauditing"
• The database is converted with "proutil <dbname> -C convchar convert UTF-8"

Audit tables are checked after emptying with auditarchive:

Upgrade to OpenEdge 11.6 or later.

To work around the problem in versions prior to OpenEdge 11.6, convert that database with auditing enabled.  But if you want to preserve the audit data you must dump it with a text dump rather than a binary dump.  If the binary dump is loaded with auditload after the conversion this will result in error 10855:

1. Re-vert to pre UTF-8 conversion backup

2. Re-enable Auditing if the restored database is not audit enabled.
$   proutil dbname -C enableauditing -U <username> -P <password> 

3.  If the audit data is to be loaded back into the database after conversion, dump the audit data as text:
Dump the audit data from Data Administration->Admin->Dump Data and Definitions->Audit Data.... (Select ALL the data, the data is dumped by default using UTF-8).  Make sure the user has Audit Archiver permissions:
Admin->Security->Edit Audit Permissions... Otherwise the error "You must have Audit Archiver permissions to access this dump option!" will be displayed when attempting to dump the data.

4.  Delete the audit data from the database by dumping it off as binary:
$   proutil dbname -C auditarchive -U <username> -P <password> 5. Access the database single-user and execute the following 3 ABL statements in the procedure editor to delete audit policy records:
$   mpro dbname -U <username> -P <password> -1

for each _aud-audit-policy: delete _aud-audit-policy. end.
for each _aud-event-policy: delete _aud-event-policy. end.
for each _aud-file-policy: delete _aud-file-policy. end.

6.  Verify that the _aud-audit-policy, _aud-event-policy, _aud-file-policy are empty
$   proutil databaseName -C tabanalys area <auditAreaName>

RECORD BLOCK SUMMARY FOR AREA "AuditAreaName" : 7
-------------------------------------------------------
                                 -Record Size (B)- ---Fragments--- Scatter          
Table                    Records               Size    Min    Max    Mean    Count    Factor    Factor
_aud-audit-data          0                     0.0B    0      0      0       0        0         0     
_aud-audit-data-value    0                     0.0B    0      0      0       0        0         0     
_aud-audit-policy        0                     0.0B    0      0      0       0        0         0     
_aud-event               131                   8.1K    20     96     63      131      1         1     
_aud-event-policy        0                     0.0B    0      0      0       0        0         0     
_aud-field-policy        0                     0.0B    0      0      0       0        0         0     
_aud-file-policy         0                     0.0B    0      0      0       0        0         0     

7.  Convert the database to UTF-8
$  proutil databaseName -C convchar convert utf-8 -U <username> -P <password> 

8. After conversion, if the text audit data is to be loaded back in, load the audit text data dumped in 3 above, Data Administration->Admin->Load Data and Definitions->Audit Data....
 

References to Other Documentation: 

OpenEdge Getting Started: Core Business Services, Part 3:Auditing

Progress Article: 
How to disable auditing?