I have some tests running for a Trigger (before insert), where I set some lookup fields (based on some logic from other fields).

Through debugging, I can see that the fields are set properly within my Trigger (let's call this field LookupField__c).

However, in my test class, if I query the inserted records [select Id, LookupField__c from Sobject where Id = :insertedRecord.Id], the LookupField__c is null (even though in the Trigger, I can see it was set).

The field is not touched anywhere else.  Is there a reason I can't query on this in the Test Class?  I could have sworn I used to be able to do this.