I would suggest you need to sit down with the PM and discuss this matter.
A change to the Works Information is a compensation event under clause 60.1(1). Changes to the Works Information are instructed under clause 14.3. The Contractor is required by clause 20.1 to Provide the Works in accordance with the Works Information. Therefore, if the PM changes the Works Information, the Contractor must comply with the instructed change while the process is under way to assess the compensation event - note that the contractor proceeds with the changed work irrespective of whether the effect on the Prices and/or programme have been assessed and the compensation event 'implemented'.
If, however, the PM is arguing that he/she hasn't changed the Works Information, then the Contractor does not need to change what it is building, so I would question why the PM is 'communicating' this information. As stated above, however, I would suggest you need to discuss this with the PM before incurring costs on the original work that the PM has (or hasn't) changed.
A change to the Works Information is a compensation event under clause 60.1(1). Changes to the Works Information are instructed under clause 14.3. The Contractor is required by clause 20.1 to Provide the Works in accordance with the Works Information. Therefore, if the PM changes the Works Information, the Contractor must comply with the instructed change while the process is under way to assess the compensation event - note that the contractor proceeds with the changed work irrespective of whether the effect on the Prices and/or programme have been assessed and the compensation event 'implemented'.
If, however, the PM is arguing that he/she hasn't changed the Works Information, then the Contractor does not need to change what it is building, so I would question why the PM is 'communicating' this information. As stated above, however, I would suggest you need to discuss this with the PM before incurring costs on the original work that the PM has (or hasn't) changed.