These are examples of databases where it is either impossible to export a tagged text file or easier to enter data in each record manually than export a text file and then import it into EndNote
Gale/InfoTrac Databases - Book Review Index Plus, Eighteenth Century Collections Online, Nineteenth Century Newspapers, Times Digital Archive.
LexisNexis - LexisNexis Academic - although it is possible to direct export citations from LexisNexis Academic, they are frequently not completely correct.
ProQuest - ProQuest Congressional