Importing an image via .CSV or .TXT file requires the use of an absolute @IMAGE link, it would be very convenient, for file sharing purposes, for this link to recall the files from the folder where the INDESING file resides, using a relative @IMAGE link, using a relative @IMAGE link.

EXAMBLE:

Volumes:BK2:PACK HD:CLIENT:PROJECT 1:PACK:LINK:file.ai (ABSOLUTE LINK)

LINK/file.ai (RELATIVE LINK)