After the change to Global search on 11/29/22 we are no longer able to search using syntax: FormattedID:U1234 FormattedID:US5678.
Release : SAAS
This works slightly different than the previous search engine: formattedId:US1 OR formattedId:US2 (notice the uppercase OR)
The same can be accomplished by using just the formatted ID's: US1 OR US2