Combining Files
Use PDF Annotator to merge multiple PDF documents into a single one.
Combining Files
Use File 
Combine Files to combine multiple PDF files into a single, new document. Select a single file or multiple files. If you had PDF documents open in PDF Annotator, you will find the option to select any (or all) of those documents using the Opened in PDF Annotator option. Arrange their order using the Up and Down buttons before pressing OK.
See also
