You can store your ALM server address, username and password. In the original ALM add-in, you have to enter your password, every time you use the add-in. Don’t worry about security issues, the customized add-in has an option to erase your password.
You can open other excel files while uploading data to ALM. This is not possible in the original add in because the upload window is modal and prevents opening of other excel files.
We can make changes to the test cases selected anytime before clicking the export button. In the original add-in, you have to make these selections before launching the add-in window.