Can I please point out that there seems to be some confusion with the use of the term 'scaling' here?
Three things happen to your marks - moderating, aligning and scaling.
Moderating happens to the internal marks - and this is the process by which the internal marks are moderated to the external marks so that the range, total, average and median marks from your cohort are the same as the externals - give or take a mark or two. This is the process where the top internal mark is pegged to the top exam mark and the bottom internal mark pegged to the bottom exam mark and the rest of the cohort are given marks based on their ranks and the relative differences in marks between the students.
Aligning happens to the external marks - and this is the process by which a team of HSC markers for the course look at the difficulty of the exam, the marking criteria and the performance descriptor bands for the course and determine the cut-offs for each band e.g. what raw exam mark will be reported as 90, 80, 70, 60 and 50.
Scaling happens to the marks - this is the process by which UAC is able to 'compare' the difficulty of the courses each year to determine marks and totals to be reported as the final ATAR.
For the OP - if you have a hard marker for HSC Modern and you were sent in with a mark of 82 and you then earned 90 raw on the exam the probability is that both the internal and external marks will be reported up on those marks. If you were first with that 82 and then first with that 90 then you final raw mark would be 90 and that would probably be reported as low-mid 90s for Modern - assuming the aligning committee come up with a cut-off of mid-80s for Modern.