This was reported by RIA Novosti with reference to the NASA talks.

"The two-pulse correction of the orbit of the Nauka module passed normally, we postponed the Kurs test to July 25, in this regard, the undocking of the Pirs module (from the ISS -

RT

) shifted to July 26," a flight control center specialist told the astronauts ...

Before the docking of the Nauka module, specialists must release the Pirs module, which will be undocked using the Progress MS-16 cargo vehicle.

The Houston flight control center previously reported that the undocking of the Pier was postponed from 25 to 26 July. 

On July 21, the Proton-M launch vehicle with the Nauka module was launched from Baikonur, which will be delivered to the International Space Station.

Its docking with the ISS is scheduled for July 29.