Tables: Keep current column types when replacing existing table with file

Jacob_154284

When replacing a data table with a file, the column types change depending on what the new information contains. Fore example, one column currently is set to TEXT type but when replacing the table with a file the data for the first row in that same column is now a number so the table changes the column type automatically to INTEGER. I do NOT want this to occur, but instead I would rather keep the current settings for each column.