Unfortunately, the regular Table File load doesn't allow for the wildcard in the sheet ID. I see two possible options:
1. You can standardize the Sheet IDs and settle on a single name
2. You can load Excel data using an ODBC driver for Excel. Then, you can use the ODBC command SQLTABLES to query the spreadsheet for the existing Table (Sheet) names and load the corresponding sheet. The script is slightly more complex, however it can cover multiple sheets per spreadsheet and allow different sheet names.