PcM study material- are CDs questions from ARE 4.0 still valid?

Hello,

I am starting my AREs with PcM being the first test.

I have study material from ARE 4.0 version and saw that the CDS from 4.0 translates to PcM.

Is the ARE 4.0 study material still valid?

Can anyone please let me know about this?

Thank you,

Preeti