I noticed that transaction reports by account or by suppliers will not list any transactions recorded in Long Term Liabilities.

I have few long term financing loans (5-10 years) for my equipment with quarterly or semi-annual payments. I set up a long term liability account and financial institutions as suppliers. I created a bill, paid the bill with the long term loan which I recorded there, but now when I want to see activity by supplier (in a report or under Expenses/Suppliers/Transaction List, or report on the account, the initial financing amount does not show there. But loan payments made to that account do.
I have no clue what is going on and how to report on the status of this financing.

There must be a way.