Complex sentence: A compilation from the MCA Records period, "Lost & Found (1986-1989)", was released in 1991 to fulfil contractual obligations, and marked the official end of the group's relationship with MCA.
Split into simpler sentences: A compilation from the MCA Records period was produced in 1991, titled "Lost & Found (1986-1989)". It was primarily released to fulfill contractual obligations, and marked the official end of the group's relationship with MCA.