How to migrate my application seamlessly from Sandbox to QA environment

Question

Hello
I built multiple environments with AWS Organizations - Sandbox and Testing.
My application has Amazon Lex V2 and Lambda attached to Lex.
I've tried export/import on Lex and Lambda to promote the dev work to testing environment, but the fallbackIntent in the Lex bot is always broken. so I am worried about promoting to testing environment using manual export/import.
Is there any other efficient/seamless way to migrate the resources to another environment(organizational unit)?

Thank you !

Answer

Hello.  
Are the resources coded by CloudFormation or other IaC services?  
The IaC service allows the same resource to be deployed to different accounts with the same configuration.  
It is also possible to import existing resources into CloudFormation, which could possibly be used for migration.  
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/resource-import-existing-stack.html

How to migrate my application seamlessly from Sandbox to QA environment

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