Complex sentence: Since 1988 IÉ showed little or no interest in the line only when they wanted to cannibalise it for parts for other lines, most notably 1992 when seven miles of track between Midleton and Youghal were removed for reuse in Sligo.
Split into simpler sentences: Since 1988 IÉ showed little or no interest in the line. In 1992 seven miles of track between Midleton and Youghal were removed for reuse in Sligo.