Sir, pardon my French, but please answer one question. If I'd say that OC X is in reality rebuilt/ reborn Canon Character, would you also believe me so easily?
Secondly, I see you are trying to work with a Canon-related themes- making a Canon Character that was acknowledged in this continuity (her name was mentioned in Convenant, if my memory doesn't play tricks on me), relating her to canon story of TFP (by wonderful remake of opening) to fulfil a gap left by screenwriters forgetting about her. But as much as she wishes to, Causeway is not a canon character, a canon story, but just an OC - the very same as many others out there on dA (I believe you would be able to find many more Original Characters claiming to be either Canon Character or with Canon Character, eventually being related to them).
I will repeat this once again- making this trick of "my Original Character is in fact the memory-wiped Canon one" is a way to get around fact that there is Canon Character, who has a canon love interest that intrude the love story of "my Original Character and Canon Character". As I am going to assume the conclusion will be "you might be Elita, but I loved you and I'll love you as Causeway" (this part you can also incorporate as a bit of prediction and answer to what you wrote to Tramp).
And again- her original bio last updated in 2013 had no word about being Elita One.
Also please keep in mind what Tramp said in post below.
Yours faithfully
BSJD6.