When adding systems to TPAM via Active Directory (AD) Integration, the managed account passwords are being changed on a scheduled basis not using the time defined in the applied system template.
For example, the password will be changed at 11:30 PM, not 11:00 AM as defined in the template.
By default, TPAM will change account passwords at 11:30 PM (23:30). This can be changed on the "Management Details" tab of the managed system in the "Change Time" section.
If you're applying a system template to managed systems that are being created in TPAM via AD integration, the "Change Time" should match what is specified in the template. Managed accounts for the system will have their passwords changed following this setting.
However, if you've specified an account to exist on the template (this can be confirmed on the "Template" tab of your system template) that account will use the settings specified on the "Management" tab for the account: Account Management | Listing, select the account, click "Details" then "Management".
Note that new accounts added for the managed system created using the template will use the system setting for "Change Time", but the account added to the template will use its own setting.