fix: homedir consistency

[ramacarlucho]

export and start commands should use the same homedir.

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• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
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• Re-reviewed Files changed in the Github PR explorer

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• Added appropriate labels to PR (ex. WIP, R4R, docs, etc)
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[fedekunze]

good catch!