In the Accounts receivable parameters table, there's a section for Summary update parameters. There are two important options: Automatic summary and Invoice account. "Automatic summary" will collect the information based on the summary update parameters specified in the table but you will also need to select the document type you would like to use for the automatic summary in each customer. The "Invoice Account" parameter will summarize the invoices based on the invoice accounts but in the "Summary Update Parameters" you can also add other filters that will be used when making the same process.

To a user who is unfamiliar with the nuances distinguishing the two of these, you would likely expect the following behavior:
- "invoice account" ONLY uses the "invoice account" to summarize invoices
- "automatic summary" uses the parameters set up in the AR parameters table

I would propose either (1) adjusting the existing settings to be less of a misnomer or (2) add a new option which is a pure "invoice account only" setting, so that users can toggle between using all parameters in the AR parameters table and the invoice account only as needed