Trim Function Not Behaving as Expected

I have a rather large Excel Spreadsheet that I want to Import (link) to an ACCESS Database. I did not create the spreadsheet. It probably was originally exported from some other type of database. The Excel Spreadsheet has a field in which the values are in the general form 0057A-0001-002. By that I mean that the values are a mixture of digits and Alphabet with some hyphens, but the lengths of the data strings may vary; there are no spaces except at the end. In any case, the data strings are text fields. There also are a varying number of spaces after the last character of the field. For this field to be useful to me in the database, I need to remove the trailing spaces. In previous work like this, I have used the TRIM( ) function in Excel to remove the extra spaces. Very simple to do, and it's always worked OK in the past. For some reason, today when I apply the TRIM function to something like "0057A-0001-002 " it does not give a result of "0057A-0001-002". It leaves the trailing spaces like "0057A-0001-002 ". My normal process would be to trim the field of interest in all the records, select all of the trimmed fields, copy them, then paste over them using the "Past Values" feature. I would expect then that when I check one of the newly pasted fields there would be no trailing spaces, but that is not happening. Any suggestions why this unexpected behavior. Here is a link to a small example of the spreadsheet -- the first 18 records or so. https://1drv.ms/x/s!AgnekDpFsyVfjJYs\_JeazBi7PKNXoA?e=IBRiL2

Thanks