Populate Datasource Grid from one Project to Datasource grid of another project

I am not a developer and I have about 3 months of experience using ReadyAPI.

I have two projects:

Project 1 (Composite Project) - Test Cases

Project 2 (Encrypted Project) - Config Values, apiKeys, etc

I am in the process of removing all sensitive data out of Project 1 and encrypting the data in Project 2. When Project 1 runs, it retrieves the values from Project 2 and runs our tests.

We could put the data in a database, but we've found that this method is too slow on our test servers; therefore, we don't want to do too many db calls.

Project 1 has a test using a datasource loop, but I need to take the values out of the datasource grid in Project 1 and put them into a datasource grid in Project 2 so I can encrypt the information.

I found this: https://community.smartbear.com/t5/SoapUI-NG/Populate-DataSource-with-Groovy/td-p/28321

..but I don't completely understand how to get it to work.

The end result I'm looking for, is to run Project 1 and populate all the testing information I need using the info stored in Project 2.