You can use Liquid to pay your vendors but you can also use Liquid to keep track of vendor invoices that you're paying outside of Liquid. This will allow you to use Liquid's forecasting features, Work Order estimates, Work Order - Invoice matching system, organize all expenses in one place for tax time, and much more.
Within an invoice, press Manually mark this invoice as paid outside of Liquid.
When you press this button, you'll be prompted to enter a description of how this Invoice was paid. After entering a description, press Save to finish marking the invoice as Paid Outside of Liquid.
The Invoice status will then change from Ready to Pay to Paid Outside of Liquid.