Directadmin to Cpanel Transfer - no account shows

Hi, recently we have a new client who owns 41 Directadmin accounts . 1 - we backup all of 41 accounts and Restore them on a Directadmin Server to have Root Access to those 41 accounts in Directadmin . 2- we use Transfer Tool and give root access to it, so we We expected to see all Directadmin accounts on Cpanel - WHM transfer tool . 3- but we didn't see those 41 accounts in WHMs Transfer tool . we try many commands in Directadmin to Update List of users and there is no Problem in Directadmin . 4- we tested this issue on 3 Cpanel servers Updated to Latest Version and Directadmin same . 5- we change directadmin server in different DC location and different Versions, but not works . so we think there is a bug into Transfer tool that didn't show all DA users on Transfer tool, there is no log available, so we need a way to figure it out what happened and what is the problem . any one get into this problem ever ? we need some assistant to fix this issue , Thanks - Hossein .