The existing agreements are valid only between Jacobite chuch in India and the RC church, this is because of the Syrian Orthodox changes.
This is not because of the Syrian Orthodox changes. Please try to read the following links and understand it.
After centuries of isolation, the spirit of ecumenism that emerged in the latter half of the twentieth century enabled the Syriac Orthodox Church to engage in constructive dialogue with sister churches which it continues to do. About seven centuries before modern ecumenical dialogue began, no less a person than Bar `Ebroyo noted:
When I had given much thought and pondered on the matter, I became convinced that these quarrels among the different Christian Churches are not a matter of factual substance, but of words and terminology; for they all confess Christ our Lord to be perfect God and perfect human, without any commingling, mixing, or confusion of the natures... Thus I saw all the Christian communities, with their different christological positions, as possessing a single common ground that is without any difference between them. (Book of the Dove, Chapter IV)
Much has been accomplished in the past few decades especially in relationships with the Roman Catholic and the Eastern Orthodox Churches. In addition to theological dialogue, the Church also actively hosts and participates in dialogue in topics such as inter-church marriages, setting a common date for Easter, etc.
Relationships with the Eastern (Chalcedonian) Orthodox Churcheshttp://sor.cua.edu/Ecumenism/19911112SOCRumOrthStmt.html
Relationships with the Roman Catholic Church
It is not rare, in fact, for our faithful to find access to a priest of their own Church materially or morally impossible. Anxious to meet their needs and with their spiritual benefit in mind, we authorize them in such cases to ask for the Sacraments of Penance, Eucharist and Anointing of the Sick from lawful priests of either of our two sister Churches, when they need them. It would be a logical corollary of collaboration in pastoral care to cooperate in priestly formation and theological education. http://sor.cua.edu/Ecumenism/RC.html
Agreement on Interchurch Marriages
between the Catholic Church and the Malankara Syrian Orthodox Church
January 25, 1994 http://sor.cua.edu/Ecumenism/19940125SOCRCMarriageAgmt.html