Empty .xlsx.amplbak file created

[4er4er4er]

When amplxl writes a file like Buy.xlsx it also creates a file Buy.xlsx.amplbak which appears to be an empty spreadsheet file.

[nfbvs]

amplxl has a backup option in the table declaration, something like:
table test INOUT "amplxl" "temp.xlsx" "backup=true":
The options are true/false and the backup file is only created if it does not exist already(to avoid backup overwriting in the case of multiple calls to the same file).
Right now the default is true, but it will be eventually turned to false.