Remove The Extra White Space Between Each Comma Delimited Digit

This is a delima I cannot figure out. I had to create passwords for a website we are building. I have 3000 employee numbers has to be used. So what i did was took the first initial and middle initial and last initial and first 5 of the ID number. I did a comma delimiter to obtain all of the letters and numbers. example: ABC12345

My problem is none of the passwords work because when I imported the letters and numbers into the sheet it looks just like the above. However on review I cut and pasted back to notepad and the data looks like this:

"A B C 12345"

So its adding a tab in the password thats thats a problem, How do I remove this extra white space between each comma delimited digit? without having to manually delete it ?