Well to answer my own question......
Called back in a few days later to try again at getting F AAnytime on the return. Finally got a competent agent who saw all the mess and sorted it out.... 2 hours of hold time :/
I asked what were the odds that this would have stayed ticketed and would be travel-able if I had not called in. Anecdotally, she put it at 60/40 that I would have traveled without issue or the miles being taken out of my account.
But, all is well that ends well. Miles were charged from my account, ticket confirmation about an hour later.
Really had to be my own advocate however about retaining current routing, not being charged the current miles rate for the route, LHR APD and exemptions therein, etc.
Glad that its all squared away and on the up and up for our honeymoon.