Based on the information you provided, we conducted a series of tests. We found that the developer environment cannot be overwritten as a target environment. It is possible to add custom data and components from the sandbox environment to a newly created solution, then export the solution and import it into the developer environment. However, managed data and components cannot be transferred to the developer environment in this way.
The developer environment is commonly used to design and build software, and the sandbox environment is commonly used to test and debug software.
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