Austria (Europe)’s university system does not allocate tuition fees to its students and allows for multiple simultaneous enrollments. This leads to students having different constellations between earlier enrollments, i.e., “pre-studies”, and their current ones. This study aimed at gathering explorative insights into the relationship of these constellations with students’ outcomes (graduation/dropout). The sample consisted of 61,098 unique students in 108,915 programs between the academic years 2010/11 and 2022/23, with 24% of students having multiple enrollments and 26% having pre-studies. Survival analyses showed higher probabilities of graduating in each semester when students had pre-studies. Odds ratio tests revealed that the odds of graduation in at least one program are lower when having pre-studies in bachelor’s programs, but higher in master’s programs. This can be explained by the transferability of exam results, a possible knowledge transfer and academic readiness as well as a higher workload with an increasing number of enrollments.