A quick question
For international graduate stream:
For background and declaration form, were we supposed to enter our part-time jobs as well in personal history while studying full time ?
TR to PR is a different stream altogether. For EE and PNP, including work history in one's profile is important (only if an applicant wants to claim points for their work experience). Equally important is when an applicant receives their ITA, they should be able to provide proof of work experience by providing letters of reference, paystubs, T4s as they submit their application. Amending work history information after an ITA can (not will) be treated as mispresentation. By amending, I mean, deleting work experience, pay, hours e.t.c.. After IRCC sends out ITA's, the information provided in an applicants profile is already saved and IRCC WILL cross reference to ensure that what is in the profile matches what will be submitted in the application. Of course amending information like additional work experience, higher income, higher language test results are harmless.
This being a different stream altogether, I doubt omitting your past work history will be an issue, so long as you included your current. An applicant can have so many valid reasons for excluding past work history. For example, there are employers who do not provide letters of reference which would serve as proof.