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Just as an FYI for anyone else reading this, I used 2012 Schweser books sitting in the office to study for the 2018 exam. Then used the CFA portal once my employer finally enrolled me the day before registration closed. There were a fair few questions that were definitely not covered in the old content but nothing the CFA material doesn’t have notes on. I comfortably passed so don’t stress about using old 3rd party books as your baseline if that is all you’ve got access to.
Interesting that you say that, the general advice that I’ve been given is to not use old materials. Did you find that you had to work extra hard to ‘compensate’ for the extra legwork around the missing bits though? 2012 for the 2018 exam is 6 years outdated so I would have thought the material would be mostly out of date.