I need this as well - I think it is utterly insane that you cannot link an invoice to a project through the API - this is bread-and-butter code stuff that would allow my organisation to enrich our internal reporting data if we had a consistent model for linking to projects.
I need this as well - I think it is utterly insane that you cannot link an invoice to a project through the API - this is bread-and-butter code stuff that would allow my organisation to enrich our internal reporting data if we had a consistent model for linking to projects.