I suspect that, somewhere along the upgrade path, I didn't properly u prompts file, but it could be something else.
You are correct, you need to find the prompt and update it, the correct prompt is:
Message base "To" input default value
Prompt: 104/554
| Sysop: | Angel Ripoll |
|---|---|
| Location: | Madrid, Spain |
| Users: | 11 |
| Nodes: | 8 (0 / 8) |
| Uptime: | 118:35:45 |
| Calls: | 1,003 |
| Calls today: | 3 |
| Files: | 832 |
| D/L today: |
8 files (10K bytes) |
| Messages: | 69,831 |