@Coxta45Unfortunately, without a good backup of the database from before the deleting of the AppInfo collection recovery will be extremely difficult if not impossible. Usually in this situation I would recommend restoring from a backup. Since you do have a old copy of that collection you might be able to recover some of the data restoring it, but this might be more trouble then its worth. Due to the data's age it is highly likely that a lot of it is out of sync with the current configuration. So even if you could get it loaded the older workflow reference may not be there any more, version information might be missing, and collections might reference workflows that arn't present in that data, etc...
Please note that we do not configure a backup process automatically with the server. This is left up to the servers administrators to determine the best process to meet their companies backup and recovery procedures. We do have a 2 part knowledge article that discusses recommended best practices and procedures for performing a backup and restoration. You can find the article at:
Alteryx Serve -Backup & Recovery Part 1: Best Practices
