Yes, I am sure.
1.) AUH-DOH was an op-up and normally QR op-ups do not affect lounge access (in contrast to upgrades on miles/QCredits/cash).
2.) They only scanned my onward boarding pass in Y.
3.) I have already been directed to the First Class Lounge / Emerald Lounge in November on an Y-Y-transfer.
These were my only DOH transfers with an onward Y flight since reaching QR Gold so I never experienced being sent to the Business Class Lounge / Sapphire Lounge with QR Gold, but of course two cases are providing little evidence for a general rule.
I have not seen any champagne in the Business Class / Sapphire Lounge which I used twice as QR Silver. In November there was Billecart-Salmon in the First Class Lounge (Emerald Lounge), no Krug. On 1 January 2016 there was no champagne available in the First Class Lounge / Emerald Lounge.