does seat matrix change for pgi as mentioned in the notification list on october 6th as they said "it is provisional' ?
Provisional list means that the candidates whose names appear in the list are eligible. But it does not grant the right to candidate of being selected for the post.
If the candidate whose name appear in the eligible list fails to provide the required documents then his/her candidature is treated as cancelled. So, the provisional list is not the final list.