The way the forms work is that the accounting-related dividend facts are for reconciliation purposes. Tax-related dividend facts must be added separately. Please see below.
In QBO, or other client-side accounting software, create separate line items if you like.
Then classify -
Dividends are grouped into the tax form on import.
Then it is necessary to manually describe the values since the franking credits are not collected from the financial statements. Also, it's possible the accounting and tax facts for dividends may be different because of timing differences.
Understanding Franking Credits