I have been using the formula below for months with no problems; showing this formula to coworker, on a different computer, it worked for cell A4 only but returned the result from cell A4 in every cell below all the way down the column.
="A"&TRIM(RIGHT(SUBSTITUTE(SUBSTITUTE(A4,"@ ",""),"-",""),9))
E.g. Cell "A4" would return properly A123456789, but cell "A5" returns the same A123456789 in "A4" even though the reference cell changes in the formula as I go down the column
="A"&TRIM(RIGHT(SUBSTITUTE(SUBSTITUTE(A4,"@ ",""),"-",""),9))
E.g. Cell "A4" would return properly A123456789, but cell "A5" returns the same A123456789 in "A4" even though the reference cell changes in the formula as I go down the column