Query on ACS Education Qualification filing for EOI

My degree is a pathway course from overseas meaning actual degree studied was 1.5-2 years and it was done after Diploma and Advanced Diploma, but ACS has considered my degree as AQF Bachelor Degree with a Major in computing. I didn’t give Diploma or Advanced Diploma for ACS assessment, so is it ok if I put 3 years date for Degree in EOI or should keep the exact dates of my actual study for my Degree? Will the mismatch in the dates of study cause an issue during 190/491 Visa?

Can someone please suggest? One of the migration agent has advised me to put Diploma, Advanced Diploma and Degree together in EOI. I am reluctant on his advice, but is that fine to include all in EOI without ACS assessing Diploma, Advanced Diploma?