I did exactly as suggested. Parent Account had a balance of -12,345.67 and Sub-Account had a balance of -12,345.67. After creating a journal entry to transfer the balance to the parent account, the sub-account has zero balance (Bank Balance and In Quickbooks both zero), this part is good now.

The Parent Account remained with a positive balance of -12,345.67 that also shows on the Balance Sheet Report as Total Credit Cards $ -12,345.67 (Total Current Liabilities $ -12,345.67).

@MaryLandT and @Regina_Lend_A_Hand_Accounting, thank you for the previous help and please let us know how to fix this.