You can use the existing campaign in another workspace without wasting time to create the same email copy by copy/import option and at the same time keep campaign details such as sequence (email copy), campaign schedule, and settings.
Please check the steps on how to copy and import the existing campaign from one to another workspace:
First, get the campaign URL from the campaign you want to copy/import.
To do this, simply click on the "..." icon at the end of the campaign and select "Share campaign"
After clicking the share campaign, you are presented with two options which is Copy Link or Export File.
Select "Copy link"
Paste your copied link into the web browser while logged in to your workspace.
Click on "Let's go" when prompted.
Once you've done that, you'll see your campaign right there in front of you.
Congratulations, you've successfully imported your campaign.