i have an issue in backup

[AGABERS]

i tried to merge not to overwrite with other account, 

An error occured during the import process.

Import again with a different backup file or get in touch with our support team. Include the steps you followed, along with any unique characteristics of your Jira setup.

• Jira is locked for import but no import could be found. This is likely to be a temporary issue and should clear up within one minute. If you continue to see this error, please contact support.

I need to step back for the old data in yesterday but i cannot  

[Kristin Lyons]

I would recommend opening a support ticket with Atlassian so they can give you more information on why the import is failing, however I will say that I tend to get that error only when I'm merging user accounts instead of overwriting them.  Is there a reason you want to merge the accounts rather than overwriting them?

[AGABERS]

Thanks for your respond, but i need to merge cause i have two accounts each one have different projects 

[Kristin Lyons]

I would recommend opening a ticket with Atlassian then.