Have Your Hyphens and Search Them Too

Hyphens are no longer removed from search query strings that Salesforce Connect OData adapters send to external systems. Now your users who search Salesforce for strings that include hyphens can find more relevant external object records. If you’ve set up your external system to handle the absence of hyphens in search query strings, make sure that including hyphens doesn’t break your searches. This feature is available in both Lightning Experience and Salesforce Classic.
Salesforce Connect is available in: Developer Edition and for an extra cost in: Enterprise, Performance, and Unlimited Editions

Previously, when SOSL and Salesforce searches included external objects, the OData adapters removed all ASCII punctuation characters before sending the search query string to external systems. It turns out that many of you have search-relevant hyphens in your data, so we changed our behavior.