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Glenn Nyhan 54Glenn Nyhan 54 

Migrating to Salesforce Files - What is the Impact if Any on Users Still Working in Classic?

I have a question about Salesforce Files. We have a test group of users now working in Lightning Experience. One particular tester would like to use Salesforce Files. I have downloaded the application called Magic Mover for Notes and Attachments to Lightning Experience. Before I move forward with the migration process I'm wondering what if any impact this will have on those users outside the test group who are still working in Salesforce Classic? 
Best Answer chosen by Glenn Nyhan 54
Gulafsha MohammedGulafsha Mohammed
Hello Glenn,
Test it in a sandbox so that other users won't be affected then deploy to production on successful migration to salesforce files.
Hope this helps. Please mark this as best answer if so.
Regards,
Gulafsha