Caroline03
There is an excellent 4 part documentary called "France, the Eldest Daughter of the Church".

The Documentary stated that St Martha, St Mary (aka St Mary Magdalene) and St Lazarus arrived in France and were responsible for the growth of the French RC Church. In fact, there is a Shrine in the Southern part of France known to have been the hermitage of St Mary Magdalene & her tomb was located and …More
There is an excellent 4 part documentary called "France, the Eldest Daughter of the Church".

The Documentary stated that St Martha, St Mary (aka St Mary Magdalene) and St Lazarus arrived in France and were responsible for the growth of the French RC Church. In fact, there is a Shrine in the Southern part of France known to have been the hermitage of St Mary Magdalene & her tomb was located and publicly venerated. Basically, this pronouncement by the Vatican is confusing. In France, it is known through Sacred Tradition that St Mary (Sister of Martha) and St Mary Magdalene are the same person and it was definitely St Mary Magdalene that journeyed to the area known today as France with St Martha and St Lazarus. So phew! What is Rome up to now?

There is also a similar documentary made by John Bird on the History of the RC Church in the UK - called "The White Dove of Peace"
EWTN for some reason removed "The White Dove of Peace" DVD from it's Religious Catalogue- but both Documentaries are still available to buy here if anyone is interested in buying them. Many Saints are discussed and the scenery throughout the Documentaries is beautiful.

marysmedia.org/…Marian_films_by_John_Bird.html
Mister Bible
According to this decree, Mary Magdelene and Mary of Bethany are two different persons. Thus, Saint Mary Magdalene will be still celebrated on July 22, and the other Mary will be celebrated on July 29 with Martha and Lazarus.
Orthocat
It seems that the Vatican is universalizing Benedictine customary usage. The monastery I go to for Mass has had the memorial of Saints Mary, Martha, & Lazarus - "hosts of the Lord" on July 29 for decades now. It was/is tied to the Benedictine virtue of hospitality. Granted, it messed with the traditional liturgy that had St. Mary Magdalene and St. Martha (seen as 2 sisters) separated by an '…More
It seems that the Vatican is universalizing Benedictine customary usage. The monastery I go to for Mass has had the memorial of Saints Mary, Martha, & Lazarus - "hosts of the Lord" on July 29 for decades now. It was/is tied to the Benedictine virtue of hospitality. Granted, it messed with the traditional liturgy that had St. Mary Magdalene and St. Martha (seen as 2 sisters) separated by an 'octave' (1 week = 8 days if you count the beginning and end day). This was to highlight their symbolism of the contemplative & active vocations respectively. The former being superior, therefore celebrated first.