Cannot restore backup

[ray007]

Having made an error in one of the databases I tried to restore the domain from the nightly backup, but plesk just gave me an error.
I unfortunately don't have the error message from the first try anymore, but subsequent tries give the following error:
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Domain softwarelandschaft.com has been restored

Execution of /usr/local/psa/admin/plib/api-cli/backup-object-manager.php --reset-domain softwarelandschaft.com failed with return code 1.
Stdout is
ERROR: PleskFatalException
Unable to remove hosting: Unable to delete subdomain: SiteAppManager::deleteSubDomain() failed: Table::select() failed: no such row in the table

0: /usr/local/psa/admin/plib/class.PhDomain.php:231
PhDomain->reset(integer '1', boolean false, boolean false)
1: /usr/local/psa/admin/plib/class.BsDomain.php:291
BsDomain->reset(integer '1', boolean false)
2: /usr/local/psa/admin/plib/class.Client.php3:605
Client->resetDomain(string '105')
3: /usr/local/psa/admin/plib/backup/backup-object-manager.php:142
BackupObjectManager->cmdResetDomain(string 'softwarelandschaft.com')
4: /usr/local/psa/admin/plib/backup/backup-object-manager.php:105
BackupObjectManager->__construct()
5: /usr/local/psa/admin/plib/backup/backup-object-manager.php:411
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The first line about the domain having been restore is a lie, and worst of all, the first try deleted some subdomains before erroring out ... is there any way to extract subdomain-data from a backup file?

Please help, I really need to get back that data!

best regards
Ray