if indeed "the OS's are 98% identical" then you can try just to copy the config somehow.
if your current cisco switch has an USB connector, you can use an USB-key to transfer the configuration
Cisco: copy startup-config usbflash0:
DCN: copy usbflash0:startup-config running-config
copy running-config startup-config (or just legacy "write")
or similar depending on how the usb is named on the device
if no usb present, you need another transfer method like
- using a tftp-server
- copy paste on the CLI from one switch to the other
do this with segments of the configuration at a time, not the whole config at once!
