Why don't you use the same private sign key for all your apps?
Yes, if you use a key to all my applications is clear that I will not have that problem.
But I thought convenient to use a key for each group of similar applications (not if I do it right).
Given your answer, it is clear that I can not do.
I thought you'd be easy to add the file
.meta that value and so we could use more than one key.
Thank You