Find and replace deprecated assets with new ones

[#1]

A tool that can go into reports, calculated metrics and segments/filters that can programmatically find and replace old or deprecated assets with new ones.

Why is this feature important to you - This would make asset management much easier for admins to update assets as new ways of reporting and data collection comes out. 

How would you like the feature to work - A page in the tools dropdown where an admin can look for a dimension or metric, locate and replace  some or all instances of it with another dimension or metric. Very similar to how a find and replace works in Microsoft office.

Current Behavior - No tool exists, a user would need to replace these manually after finding all instances of it.