location of the resampled data from SMOTE
SMOTE is an algorithm used to generate " synthesize" new samples from the real samples. 
It selects randomly one of the k-nearest neighbors, find the distance between these two pints , synthesize new point by modifying the sample considering the distance and a random number between 0 and 1.
SMOTE algorithm does not use samples from majority class only samples from minority. 
It synthesizes new samples
It expects a high density minor class with small variation within the class 
Anything else is related to the implementation, many implementation return only the synthesized samples