Captahab,
Not sure if that question was for me and i cant exactly answer it with certainty but i do know with a lot of things in the MOS139 there are dispensations for pre-existing stuff.
Eg: if the lights have been 90m spacing for 10yrs and the rule about the lights came out 9yrs ago then as the were per-existing to the new requirements they may be given a dispensation until its time to upgrade/replace them
Don't take this as gospel but i believe its how a lot of stuff at older airfields work or it would require many many millions of dollars to move taxiways/terminals/roads/apron lights each time an amendment was made for different spacing