I could not pull up the fare rules for my ticket, but there is an L fare available for JFK-PEI right now and I was able to pull up the fare rules on that. I don't see any language that specifies the entire ticket will need to be repriced. Perhaps I am overlooking something as it's really confusing.
IN THE EVENT OF CHANGES TO TICKETED FLIGHTS
BEFORE DEPARTURE OF JOURNEY - APPLIES WITHIN TKT VALIDITY
CERTAIN DOMESTIC REISSUE PROVISIONS MAY BE OVERRIDDEN BY
THOSE OF CM INTERNATIONAL FARES
CHARGE USD 140.00 FOR REISSUE OR HIGHEST FEE OF ALL
CHANGED FARE COMPONENTS - CATEGORY 19 DISCOUNTS APPLY
AND
REPRICE USING CURRENTLY TKTD FARE
PROVIDED ALL OF THE FOLLOWING CONDITIONS ARE MET-
1. NO CHANGE TO FARE BREAKS
2. WHEN NO INTL COUPONS REMAIN - ALL NEW TRAVEL MUST
BE DOMESTIC
3. CM FARES ARE USED
4. NEW TKT HAS EQUAL OR HIGHER VALUE THAN PREVIOUS
TKT
5. ALL RULE AND BOOKING CODE PROVISIONS ARE MET
6. ADV RES IS MEASURED FROM ORIGINAL TKT DATE TO
DEPARTURE OF PRICING UNIT
OR -
REPRICE USING FARES IN EFFECT WHEN TKT WAS ISSUED
PROVIDED ALL OF THE FOLLOWING CONDITIONS ARE MET-
1. WHEN NO INTL COUPONS REMAIN - ALL NEW TRAVEL MUST
BE DOMESTIC
2. CM FARES ARE USED
3. PUBLIC FARES ARE USED IF TICKETED FARE IS IN
PUBLIC TARIFF. PRIVATE FARES ARE USED IF TICKETED
FARE IS IN PRIVATE TARIFF
4. NEW TKT HAS EQUAL OR HIGHER VALUE THAN PREVIOUS
TKT
5. ALL RULE AND BOOKING CODE PROVISIONS ARE MET
6. ADV RES IS MEASURED FROM ORIGINAL TKT DATE TO
DEPARTURE OF JOURNEY
OR -
REPRICE USING FARES IN EFFECT TODAY
PROVIDED ALL OF THE FOLLOWING CONDITIONS ARE MET-
1. NO CHANGE TO FARE BREAKS
2. WHEN NO INTL COUPONS REMAIN - ALL NEW TRAVEL MUST
BE DOMESTIC
3. CM FARES ARE USED
4. ADV RES IS MEASURED FROM REISSUE DATE TO DEPARTURE
OF PRICING UNIT
WHEN CHANGE RESULTS IN LOWER FARE SUBTRACT RESIDUAL FROM
THE PENALTY THEN ADD-COLLECT/REFUND - REFUND VIA ORIGINAL
FORM OF PAYMENT
ENDORSEMENT BOX- HIGHER NON-REF AMT AND NEW ENDORSEMENTS.
OR -
AFTER DEPARTURE OF JOURNEY - APPLIES WITHIN TKT VALIDITY
CERTAIN DOMESTIC REISSUE PROVISIONS MAY BE OVERRIDDEN BY
THOSE OF CM INTERNATIONAL FARES
CHARGE USD 140.00 FOR REISSUE OR HIGHEST FEE OF ALL
CHANGED FARE COMPONENTS - CATEGORY 19 DISCOUNTS APPLY
AND
REPRICE USING CURRENTLY TKTD FARE
PROVIDED ALL OF THE FOLLOWING CONDITIONS ARE MET-
1. NO CHANGE TO STOPOVERS AND CONNECTIONS/1ST FARE
COMPONENT/FARE BREAKS
2. WHEN NO INTL COUPONS REMAIN - ALL NEW TRAVEL MUST
BE DOMESTIC
3. FULLY FLOWN FARE NOT REPRICED TO FURTHER POINT
4. CM FARES ARE USED
5. NEW TKT HAS EQUAL OR HIGHER VALUE THAN PREVIOUS
TKT
6. ALL RULE AND BOOKING CODE PROVISIONS ARE MET
7. ADV RES IS MEASURED FROM REISSUE DATE TO DEPARTURE
OF PRICING UNIT
OR -
REPRICE USING FARES IN EFFECT WHEN TKT WAS ISSUED
PROVIDED ALL OF THE FOLLOWING CONDITIONS ARE MET-
1. WHEN NO INTL COUPONS REMAIN - ALL NEW TRAVEL MUST
BE DOMESTIC
2. FULLY FLOWN FARE NOT REPRICED TO FURTHER POINT
3. CM FARES ARE USED
4. PUBLIC FARES ARE USED IF TICKETED FARE IS IN
PUBLIC TARIFF. PRIVATE FARES ARE USED IF TICKETED
FARE IS IN PRIVATE TARIFF
5. NEW TKT HAS EQUAL OR HIGHER VALUE THAN PREVIOUS
TKT
6. ALL RULE AND BOOKING CODE PROVISIONS ARE MET
7. ADV RES IS MEASURED FROM ORIGINAL TKT DATE TO
DEPARTURE OF JOURNEY
OR -
REPRICE USING FARES IN EFFECT TODAY
PROVIDED ALL OF THE FOLLOWING CONDITIONS ARE MET-
1. NO CHANGE TO FARE BREAKS
2. WHEN NO INTL COUPONS REMAIN - ALL NEW TRAVEL MUST
BE DOMESTIC
3. FULLY FLOWN FARE NOT REPRICED TO FURTHER POINT
4. CM FARES ARE USED
5. ADV RES IS MEASURED FROM REISSUE DATE TO DEPARTURE
OF PRICING UNIT
WHEN CHANGE RESULTS IN LOWER FARE SUBTRACT RESIDUAL FROM
THE PENALTY THEN ADD-COLLECT/REFUND - REFUND VIA ORIGINAL
FORM OF PAYMENT
ENDORSEMENT BOX- HIGHER NON-REF AMT AND NEW ENDORSEMENTS.