first query, record count = 10k:
SELECT Id FROM Account WHERE LastModifiedDate >=2020-04-18T01:03:21Z AND LastModifiedDate < 2020-04-19T01:03:21Z
second query, record count > 10k:
SELECT Id "and several other fields" FROM Account WHERE LastModifiedDate >= 2020-04-18T01:03:21Z AND LastModifiedDate <2020-04-19T01:03:21Z
Question: Why do the record counts differ? In both cases only the rows that have been modified in the given time period should be retrieved, imho. What do I miss?