Original sentence: The designation Macedonian then was an umbrella term covering different nationalities in the area and when applied to the local Slavs, it denoted mainly the then Bulgarian community, which now comprise the modern Bulgarian and Macedonian ethnicities
Edited sentence: The designation Macedonian then was an umbrella term covering different nationalities in the area and when applied to the local Slavs, it denoted mainly the regional Slavic community, which now comprise the modern Bulgarian and Macedonian ethnicities