Use of holdout cases generated in SPSS in STATA

#1
I am working on consumer preferences for fish, using conjoint analysis. My experimental design was generated in spss using orthogonal design, but my analysis has to be done in STATA. I need clarification if STATA will recognize the holdout cases that would have been used to validate the model in SPSS within it. Is it permissible to drop the holdout cases and analyse the main choice ranked product profiles in STATA