A suppressed cultus really is kind of a misleading name.
All it means is that the public-cult of the Saint is no longer officially supported
(such as with a liturgical feast day, a memorial mass, etc., etc.)
The Saint may still be honored privately with no problem whatsoever.
Saint Philomena's public cultus was suppressed, sort of, in 1961, to make
way for Saints with more historically-verifiable biographies (such as Clare, Lawrence, etc), yet her main shrine was never dismantled (nor was it EVER intended to be, either), her devotion has enjoyed a huge resurgence since 1986, thanks to Patti Melvin of The Living Rosary Association and thanks to the good efforts of Father Giovanni Braschi of the Mugnano, Italy, shrine. More than 11 million people now belong to the Universal Living Rosary Association, and millions support the Shrine in Mugnano, and many, many, many people belong to the ArchConfraternity of St. Philomena, too, and
with FULL Church approval.
Not bad for a Saint who cultus was "suppressed."