The status of this group remains in doubt because of certain complications in the records. The first is that the name Tiopine is so similar to that of the Tiopane that the two have been confused. In fact, some writers have thought that both names may refer to the same people. The second is that San Antonio mission records indicate that after 1750 the Tiopines became known as the Chayopins. It is not certain whether this involved combining the survivors of two or more groups and referring to them by a new name (as was sometimes done for administrative convenience) or simply using another form of the same name for the same people (as was also done at times). The solution to this problem must await detailed analysis of the primary documents.