Hello Lyes and welcome to the Community!
Thanks for reaching out about importing another space into your Confluence instance. The short answer is, possibly. The long answer is, assuming the instance in which you exported Confluence is mirrored to the instance your importing into then everything should go just fine. You need to ensure the versions are compatible to be exported/imported along with any app which is present on the exported system should be present on the imported system as well (to avoid missing data or errors).
There are resources available to review to ensure you’re able to export and import without issue. We would suggest reviewing the following:
I hope this information proves helpful and you’re able to export and import without issue.
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