When in the Blueprint Editor, you can click on Search in the Toolbar or use Ctrl+F to bring up the Find Results window.
Here, you can search your Blueprints for nodes, pins, pin values, graphs, variables, and variable values that match your search query. You are also able to search animation graphs.
Right-clicking on a node in a Blueprint or an element in the My Blueprint window and clicking on Find References will also open the Find Results window, with the search
field populated with the name of the element as well as the MemberGuid of the element. This ensures that you are searching for that specific variable or function, even if you have multiple
instances of that name in other parts of your project.
Searching is an asynchronous process, meaning it will not prevent you from using the editor as the search completes. You can also make multiple searches in different Blueprints at the same time.
It leverages the Asset Registry for the searchable data, so the most recently indexed data is always with the asset file.
By default, this tool searches your current Blueprint, but by unchecking the Find in Current Blueprint Only checkbox, you can search all Blueprints in the project. When Blueprints are not indexed in the system, it will inform you, as in the below image:
Clicking Index All results in an extremely slow process that will stall the editor, as it loads all un-indexed Blueprints and re-saves them to cache searchable data. If you do not
wish to re-save the content, or the content is protected by source control and cannot be checked out, it will simply load all Blueprint assets to cache the latest searchable data in memory.
However, if you do not re-save the content, Index All will need to be done each time you open the editor.