If you created an estimate under Presales, you will not be able to convert it to a Project.
Estimates under Presales is a standalone feature that doesn't offer the features found in Project.
**There will be an update for this in the coming months.
***We will also offer to do it for you, just shoot us an email and indicate estimate reference number.
To convert your estimate to a Project, you will need to create a template for the estimate in the estimate summary page. Go to the summary page of the estimate and click on More on the top right and Save as Template.
Once saved, go to Projects and create a new Project. You will be creating a estimate under Projects.
With your new project, go ahead and create an estimate and fill out the estimate information. When selecting template, find the template you just saved in the appropriate category and add it. See example below.
Click next and you should see the same estimate you just created and quickly click next until you make it to the the summary page.