Thank you for your feedback about The Welkin Suite IDE and for your question.
You can find the required functionality inside the IDE as the 'Deploy to organization' option. This is available for you in the Main Menu -> Project -> Deploy to organization. This is dedicated to the migration of files from one Salesforce organization to another.
If you are faced with any issue during your working process on this functionality, please contact us. Currently, this option has some issues which are known to us. The improving of this deployment is included in our working plan.
If you have additional questions, please write us also. We will be glad to help you.