@Raizy86
To answer your question, there is no established time limit to search for a transaction in QBO nor is there a difference between the different QBO levels when it comes to search options.
May I ask for some further details in order to better understand? Are you able to access other transactions from 2017? Was the transaction in question tied to any other information that was edited or deleted?
Knowing more will help me determine if there is something happening that is not working according to design.
