Scholars Portal has a clear understanding of the type of Content Information and Information Properties that it preserves.
As stated in the Preservation Action Plan, for the Full Preservation level for journal articles, currently acceptable formats include PDF and XML. XML articles may have diagrams in GIF, JPG, TIFF, or PNG format. Articles not in these formats (or those unable to be converted to these formats) may still be preserved at the Bit-level Preservation level. Supplementary materials will be accepted in any format, and preserved at the Bit-level preservation level.
Scholars Portal's ejournal SIPs that eventually become AIPS are all fairly similar in composition and are therefore recorded and treated in a uniform manner.