This alternative method works when you have a physical good card and a physical target card.
If you put a Siemens MMC into a standard PC card reader, Windows will often prompt you to "format" it. Never do this. Formatting destroys the Siemens structure.
Siemens MMC Image File Download & Management: A Complete Guide
The SIMATIC Micro Memory Card (MMC) is a proprietary memory storage device designed exclusively for Siemens SIMATIC S7-300 controllers (and some S7-400 models). Unlike standard memory cards that use a conventional FAT or exFAT file system, Siemens MMC cards employ a specialized format that Windows cannot interpret properly. If you insert a Siemens MMC into a standard computer card reader, it will not appear in Windows Explorer but will show up in Disk Management as several unformatted partitions.