Let me take this a bit at a time:

“I am doing progress billing on a project. I have billed all but $345.”

When you do this, each invoice is created “from” the Estimate. That means every Progress invoice is linked; and that is what makes the Progress Chart available at the […]

Resolution for 'AIA billing issue: 'Progress billing need assistance.' available: Yes.

The AIA billing issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the AIA billing issue yourself by looking for a resolution described in the article. If it is a complex AIA billing issue or you are unable to solve the issue, you may contact us by clicking here or by using other AIA billing support options.

For more information about resolving issues related to AIA billing in Quickbooks/QBO or to get support for the issue 'Progress billing need assistance.', click the link below: