When I export a playlist and then open in excel, do whatever sorting I want, I then save the file and reimport into itunes but not all the songs are there. It appears to be from "comma's" in the song name. Any solutions?

Question

I see songs such as "Monday, Monday" or "Paint It, Black" or even the artist name such as "Fireballs, with Jimmy Gilmer" which have comma's in them, being a problem when I try to do the following:
1. Export a playlist which contains songs which are all there and play fine, but some have comma's in the title such as listed above.
2. I then open that file in Excel and bring it in as a Tab-delimited file.  Everything lays out fine, and all the songs are thing (including those with comma's).
3. I then sort the varoius fields I want (which I can't do in i-tunes because i-tunes won't sort it properly), and resave the file as a newly named file, which is also a .txt file.
4. I then import that playlist into my itunes. It is exactly the same songs that I just had exported but i-tunes says some of the songs can't be found.
I have traced this problem to comma's in the file name of the song such as listed above.  There must be a solution to this either as the file is opened in excel or in how it's saved or some other solution short of having to rename song/artists without using comma's. 
Thanks.

Answer 1

The additional problem is the file name of the song itself.  Even if I were able to delete the commas or replace with a space for example, changing the file name would result in itunes not being able to find the file.  I would have to go through each file (out of about 15,000+ songs) to find any that have titles such as described in this thread and change not only the song and artist in the fields, but changing the mp3 file itself. 
I fear that I am really pretty much going to have to start with a list of songs that have no comma and then do a file compare to find those songs with commas and then just physically moving them into a new playlist I'm trying to create, but this is a royal pain as I want to be able to create a variety of playlists based on these chart dates/peak positions. 
I'm trying to sort the songs in this manner:  I use different fields in itunes so that I can put the "peak position" of each song based on Billboard charts, as well as the date the peak position was acheived. I use the "comment box" for that.  I use the "grouping" field for my peak position.
So I end up with something like "10/14/1980" in the comment box as the peak position for a song which is in the grouping field, and so forth.  If I try to sort the comments column in itunes for example, it won't sort properly. If I sort the Grouping field, it will bring up all the "1's", but that's followed by "10", 11, ...19, then "2", etc.  This is why I want to export the playlist and sort it as I want, and then reimport the playlist into itunes. 
What I'm ultimately trying to achieve is a year-by-year peak position playlist so that I end up with every #1 song (in this case) from, say, January 1st 1980 and then every #1 song in sequential order for the rest of the year falls in line.  I have chart position dates from 1955 through 1999.  I have entered in all the data from Billboard books I own so I can really create some amazing playlists, but these commas are problematic. Had I known this ahead of time I would have made "Monday, Monday" as "Monday Monday" and not included commas, but it's too late for that.
Any suggestions?