OK Jon: It is alright to disagree,because my theory is not scientific,it is what I have seen from experience.
So I may be wrong after all.
On the other hand,I am looking of your recent top pix,and I can see clear on more than one leaf there that the base of leaves on Vista is positivelly deccurent.
And is what I said in my post.
Violette de Bordeaux has leaves that are semicordate!.
How can they be identical?
I also can see clear that Vista has nothing to do with Mission,but is very similar to Violette de Bordeaux,except it grows larger with larger leaves,of a little bit different shape,and a little larger fruits.
I will also like to point in favor of my theory,the fact that genes can be taken,by the new seadling ,unequal from the 2 parents.
As in case of your Vista seadling it took most genes from the father side,and so it took much less from the mother Vista fig.
In the case of Vista fig,it very well could take more genes from the mother fig (Violette de B),and very few from the father side.
I would also like to point out that when it takes the genes from the, father wild caprifig, the new seadling is much inferior to the mother tree, which is not the case of Vista Mission having the good genes of Violette almost entirely.