This would cause the FR new year to fall on the same Gregorian date until either calendar drops a leap day. So if the Romme rule is the same as the Gregorian rule, but for FR year numbers, then the new year days would fall
as shown here:
and so on every 400 years
I think this is the only example of two leap year rules using the Gregorian leap year rule applied to different year numbering systems.
An alternative system referred to as continuous in the Wikipedia article has the leap years one year earlier to fit in with the actual leap years (3, 7, & 11). This has the leap day about a month and a half closer
to the Gregorian leap day (Feb 29) than the Romme leap year rule. Hence it would have simple conversion to Gregorian for more dates than Romme, but not for the new year day.