Don't allow update of sample positions from CSV if the column and row of the position of a sample are entered as the wrong format for the box type.
If a box has Columns as A, B, C etc and Rows as 1, 2, 3 etc, FreezerPro will put samples with positions on the CSV formatted as "A / 1", "A / 2", "A / 3" in as going down a column. However if by accident the positions are entered as "1 / A", "2 / ...