[tor-relays] Wrong "first seen" flag for bridges at metrics.torproject.org

[telekobold]

Hi together,

I have an issue regarding the "first seen" flag at 
metrics.torproject.org: It is definitely wrong for my two bridges - both 
dates are much too close in the past.

For one of the bridges, it seems to correspond to the last signing key 
renewal, for the other bridge, it seems to correspond to the penultimate 
signing key renewal.

Has anyone observed similar behavior for its relay? (I found it 
meaningful to first ask here before creating an issue at [*]).

[*] https://gitlab.torproject.org/hiro/onionoo/-/issues

Kind regards,
telekobold