A Common Misunderstanding:

There is a common misconception that Rav Moshe Feinstein ZT"L allowed one to switch between any of the Minhagim of Sefirah. On closer inspection of Reb Moshe ZT"L's Tshuvah, one can see clearly that this is certainly not the case. Nevertheless, many individuals still error and misquote what Reb Moshe ZT"L held. To rectify the widespread misunderstanding more than one of Reb Moshe ZT"L's talmidim have published clarifications of Reb Moshe ZT"L's position.

Below you will see the publications of two of Reb Moshe ZT"L's talmidim who attempted to rectify the common mistaken understanding:

In the Sefer "L'Torah V'Horah," Rabbi Elimelech Bluth explained Reb Moshe ZT"L's psak on changing Minhagim during Sefirah.

Rabbi Avrohom Blumenkrantz ZT"L, wrote about the mistaken understanding some have of Reb Moshe ZT"L's Tshuvah on Sefirah.