Let's perform some troubleshooting steps to fix the issue, DKC.

To find the most common data issues in your company file and fix them, you can use the Verify and Rebuild data tool. But before that, make sure to back up your company file in case you encounter issues. After the back, ensure to scan your company file first for errors or data damage. I've outlined the steps below for your guide: 

1. Select File, then select Utilities.
2. Select Verify Data, then select 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.

Once done, you rebuild them to fix the data damage that is found. Here's how:

1. Select File, then select Utilities.
2. Select Rebuild Data, then select OK to close all windows.
3. QuickBooks will ask to make a backup before rebuilding your company file, select OK. If you don’t want to do a backup, select Cancel to continue rebuilding your company file.
   1. If you haven’t set up any backup preferences, QuickBooks will ask you to update them. Select Backup Preferences and edit as needed, then select OK.
   2. When the backup's finished, select Show in Finder to locate the backup or select OK if you’re done.
4. Once the rebuild's finished, select OK.

Apart from this, to make sure your file is free of errors or data damage, verify your company files again. If you still have errors or damage, rebuild the file again. Additionally, you may be experiencing issues when converting your Mac file to Windows. If so, go through this article for your reference: Error: QuickBooks Is Not Able to Convert Your Mac File To A Windows File.

Please get back to us if you have questions about disappearing text in the compose box. We'll always make sure to get you covered anytime.