When deploying changes the prevalues in the dropdown doesnt get sent over. Instead they leave the content blank when it has been successfully been transferred over. <!-- Please fill out the rest of the details in the issue template below. The more details you can give us, the easier it will be for us to determine the cause of a problem. --> ## Umbraco version I am seeing this issue on Umbraco version: 7.15.6 Deploy version: 2.1.1 Reproduction ------------ If you're filing a bug, please describe how to reproduce it. Include as much relevant information as possible, such as: ### Bug summary I have a live environment with a Dropdown data type in a content node. The value is set to "Test 1". If I then go to my dev environment and I create (or edit) a prevalue in the Dropdown data type and deploy to live, the Dropdown value that I had on my content node on live, "Test 1", is set to blank. This happens both in nested and non-nested content. ### Specifics Using Chrome v 87.0.4280.88 for Windows Using Umbraco version: 7.15.6 Using Deploy version: 2.1.1 ### Steps to reproduce 1. Create a new project on Umbraco Cloud 2. Add development environment 3. Go to development environment and create some prevalues in the Dropdown editor under Developer -> Data Types -> Dropdown.  4. Create two Document Types. The first one holds your content, where you add a Dropdown property and a Nested Content property. Remember to make this node allowed as Root under "Permissions".  The second one ("Person" in this case) is your Nested Content. Add a Dropdown property here as well. I also added "Person Name" and "Person Age" just for illustrative purposes.  5. Create your test content. Remember to set a value in the Dropdown both for Nested and non Nested Content  6. Deploy and transfer content to your live env. Great, the content should be there together with the selected prevalue ("Test 1" and "Nested Prevalue 1" in this case) so it looks just like the image above. 7. Go to your dev environment and delete a prevalue in the Dropdown editor (I delete "Test 2" in this case) and save the changes. My prevalues on dev now look like this:  8. Deploy your changes from dev to live. 9. Your live environment should now have lost the prevalue in the Dropdowns so it looks like this:  This happens whether you remove, add or edit a prevalue. ### Expected result The prevalues should still be there unless they are actively changed on the dev environment and pushed to the live environment ### Actual result The prevalues are empty