On open estimates, almost completed, almost everything gets deleted

Hello there, @selfservicesucks. 

Welcome to the Community. I'd be glad to assist you with estimates not saving. 

One of the reasons you are having this issue is that you have clicked Save and new, which would open up a new estimate and could seem like all of the work was deleted. Check your recent estimates by clicking on the history button in the left corner at the top of the page and maybe the estimate was created.

If you're ever unsure about what information has been entered, one option that you have is to check the Audit Log, which keeps a record of actions within QuickBooks Online. 

You can follow these steps below: 

1. You need to sign in as an admin to access the audit log. 
2. Go to Settings ⚙and select Audit Log.
3. Select Filter.
4. Use the fields on the Filter panel to choose the appropriate User, Date, or Events filter to narrow the results.
5. Select Apply. 
6. To open the audit history, select View in the History column. 

Also, you can go to the Manager users menu. This lets you view the activities performed by your users. 

Here's how:  

1. Go to the Gear (Settings) icon at the upper right.
2. Select Manage Users under Your Company.
3. Locate a user and click View user activity from the Action column as seen in the screenshot below. 

Moreover, you can use the audit history feature to view the changes and the person who made them. Also, you can check out this article about reports in QuickBooks Online. 

You may want to check these articles for additional details about estimates:

• Customize invoices, estimates, and sales receipts in QuickBooks Online. 
• Set up and use estimates.

Please let us know if you need more help with your transaction reports. Have a good one!