Preserving Keychain data during developer account migration

I am migrating our organisation's app to a new developer account, for internal reasons. I've learned that upon transferring the app to the new account, and after we release an update for the app from the new developer account, we will incur a one time loss of keychain data. My concern is, that we cannot afford this loss of data. Due to security reasons and nature of the type of clients using the app.

So my question is 2 part;

1) Is there any way that I can prevent this keychain data loss?

2) If not, what are the alternate strategies I can use to prevent the users from getting logged out during this transition?

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