I think I get the question.
I would make a button to trigger a script that includes a find (?all) and a sort specify "sort on the number"
is the '00' before the number necessary?
I would also check that your number field is a number not text.
It would be possible to make the script automatic on going to the layout after the import..
This may have all been said
You might try setting the OnModeExit script trigger to perform a script that sorts your records as desired each time you exit find mode on this layout. Thus any find will automatically sort your records in the order specified in your secript.