Please tell me the flow of delivery when you requested iOS application development.

While there is not the only correct way, it is not common to "transfer" what you submit with another account.

Usually, it is common to deliver the source code.
If the client is not very familiar with the source code and is unable to work on the release, we will build and apply for it on behalf of the client.
Most accounts are borrowed from clients.
It depends on how far you want to act for me.Except for the build, there are few difficulties, so I think some clients end up delivering it in the form of source code +.ipa.
Or prepare a separate application manual...

In any case, the delivery is based on the source code, and in the case of iOS apps, there are a few more tasks to be done before they are released, so it's a case-by-case decision whether to take care of them (at an extra cost) or leave them to the client.

"The ""transfer"" method was first introduced with the intention of not wanting to give the source code, but even in that case, it is sufficient to deliver it in binary form and apply for it on behalf of the client or account."