FT Offer, how to get into a group

BankonBanking:

The bank should have a sellday at some point, which will be the time when you meet with all of the different teams and then rank your interest and they rank who they most want in their teams. From there everyone will get matched up. That said, if you have any contacts in the firm, you can absolutely use them to either put in some interest with them or get contacts from other teams. For example, if your friend works in TMT and you are interested in FIG, you can email your friend to see if he knows anyone in FIG to give you a contact. Additionally, if any of your interviewers were in FIG, you can reach out to them as well to plant the seed of interest ahead of the sellday. If all else fails or at least fails to pan out, you can always wait until the sellday and then put in the extra effort during sellday to really touch base with each of the reps of your group of interest and really express a sincere interest in the group - ask questions, have some insight into the business already, etc. Finally, when it comes time to rank the groups, make sure to put your group of interest #1 - hopefully they think highly of you as well (which is where the previous contacts, etc help) and you should be in good shape.

I got an offer after my SA gig and want to go back to the same team but our offers aren't group specific. Although I got the offer I wasn't confident group liked me through the summer, though there were two of us and the other guy didn't get in. Should I still be ok to go back or are people often rejected by groups they summered in? Thanks.