App upload problems

I made an app and last week I uploaded it to google play. The first version is made in, but now I wanted to add more things and saw that ai2 have only 30mb limit. So I exported my project as .aia file and imported it into, because I understood that it have 50mb limit, which is better. I exported my keystore from the project which I uploaded in Google Play and imported it into the new platform. I am logged with same google account in the two platforms. Now when I try to upload an update in Google Play occurs error something like - Invalid AAB zip file type. I want to ask you how to solve this problem?