each .dbx file represents one of the folders in your local folders
for your example with hold.dbx:
first - move the files out of the directory again so they don't get overwritten
create a folder in OE called hold,
close oe
confirm there's a new file called hold.dbx in the directory
rename it (ie holdX.dbx)
move the hold.dbx file into the directory
open oe, should be there with whatever emails you had in that folder before
OE by itself won't recognize what is in the 'deeply hidden' directory - you have to create the 'reference points' for the files through creating folders in OE that correspond to the file names.
for your example with hold.dbx:
first - move the files out of the directory again so they don't get overwritten
create a folder in OE called hold,
close oe
confirm there's a new file called hold.dbx in the directory
rename it (ie holdX.dbx)
move the hold.dbx file into the directory
open oe, should be there with whatever emails you had in that folder before
OE by itself won't recognize what is in the 'deeply hidden' directory - you have to create the 'reference points' for the files through creating folders in OE that correspond to the file names.