Give the spreadsheet a scientific reference.

Existing backend pilot

The Office.js linked-curve integration is implemented and owner-reported working with the existing backend. It is part of the current pilot, not a general release guarantee.

OSDU is a separate qualification

Bounded OSDU tests include native Excel follow/pin evidence. The shipped Office.js OSDU path still has an integration gate to pass; those tests cannot substitute for it.

Know what is linked

A linked scientific curve should retain its identity, units, missing values and exact revision. Following a curve and editing the original source application are separate claims.