There used to be a 'sticky' here concerning this. My guess is that this was a 'custom' preset of your own making, created pre-3.X.X.X (before preset naming was a feature). If you have other custom presets, you might want to check those out, too.
The simplest solution that I found was to name it *anything* (even a single alphanumeric character) using the PF itself, then save over it again as a post-3.X.X.X preset. Check all of your parameters first before re-saving. Sometimes there'll be one or two changes to them (especially if 3.X.X.X added a wider range of values, such as additional waveforms, a larger delay range,etc.).
Another "solution" is to re-initialize the pedal …