I'm here to make sure you're able to bring those missing data, @Mark3.

The following are some troubleshooting steps that you can perform. Let's start by making sure that you've opened the latest backup copy of your file. Here's how you can search it:

In QuickBooks

1. From the QuickBooks menu, select Preferences.
2. Select Backup.
3. Click Reveal Backup Folder, then double-click the folder where you save your backup files.
4. You can select Date Modified to sort by date and see your most recent backup.

Spotlight search

1. Click the magnifying glass \uD83D\uDD0D icon in the menu bar.
2. In the search field, enter .dmg, and then select Show all in Finder.
3. To sort by date and see your most recent backup, hit Date Modified.

You'll need to look at each file, the largest file is likely to be the one with the most data in it. Once done, let's restore your backup company file. 

Possible data damage might have also caused missing data in QuickBooks. You can use the Verify and Rebuild Data tool that fixes unexpected and most common data issues. Let me walk you through the steps:

Verify data (scan company file for errors or data damage)

1. Select File, then click Utilities.
2. Choose Verify Data, then hit OK to close all windows. If you see “Your data has failed the integrity check” you need to rebuild your file. If there are no problems with your data, you’re done.

Rebuild data (fix errors or data damage found)

1. Go to File, then select Utilities.
2. Click Rebuild Data, then tap OK to close all windows.
3. Choose OK to backup your company file.
4. Once the rebuild's finished, select OK.

If you were unable to see it, I highly recommend contacting our Technical support team. They use specific tools to do a screen-sharing to further investigate the odd behavior of the software and help locate the missing data. 

Here's how to reach them:

1. Visit this link: help.quickbooks.intuit.com/en_US/contact. 
2. Choose QuickBooks Mac Desktop.
3. Click the Search for something else button.
4. Enter Missing data in the Tell us more about your question: box.
5. Hit Search.
6. Select Start a Message.

Here's a great source where you can find articles that can help you in managing your account in QuickBooks, please visit our QuickBooks for Mac Help articles page. 

Please keep me posted if you have any other concerns about your QuickBooks data. I want to make sure everything is taken care of for you. Have a good one.