I was asked to submit a copy of my entire logbook along with an attested copy of my flying license when I applied for my FRTOL. Even though it's not in their list of required supporting docs(since a person who applies for an FRTOL need not have any prior flying experience), they still asked me to submit all of this, along with my marksheets, RTR(A) license. They informed me about having to submit a copy of my logbook and flying license via an objection letter. And that takes some time for them to process from the day your file reaches them. So to be on the safer side as well as to save some time, I'd suggest you be extra thorough and submit a copy of your logbook and flying license(CPL copy attested by a gazzetted officer).