Complex sentence: However in a strange twist the Yorkshire Terrier fleetname was retained by Andrews as it was seen as the one with the better marketability thus whilst Yorkshire Terrier ceased to exist as an operating company the fleet name continued, and was applied to the entire Andrews fleet.
Split into simpler sentences: However in a strange twist the Yorkshire Terrier fleetname was retained by Andrews as it was seen as the one with the better marketability. Thus, whilst Yorkshire Terrier ceased to exist as an operating company, the fleet name continued and was applied to the entire Andrews fleet.