Thank you all for your feedback.
I´ve sent several e-mails to TACA FF program, but got no response about an elite match.
In the meantime, I´ve made reservations for 2 flights in TACA, and 2 in COPA (March and April).
I plan to do at least one more trip in TACA before their promotion ends (June 15th).
This will give me first Elite level (PLATA) in TACA, and still will have GOLD in COPA (1 fligt ended, two booked, and two more in Sept and March), since I´ll reach to 50K only with those flights.
But, in JUN, JUL, AUG, NOV I still have chance to do 1 trip each month that could give me PLATINUM again. If in December I see that I´m not getting it, I could do a MR, or to do a more complex itinerary in my last two trips, trying to reach the PLATINUM again.
By the way..., every trip I do are 8k Miles or more.