Personally, there will be no advantage in file performance whether you have 30 years of transactions or one year of transactions.
Quicken Mac does not have a year end copy feature. Second, Quicken Mac is based on an entirely different database architecture than Quicken Windows.and thus is not subjected to performance issues with large file sizes. First of all, file size rarely has anything to do with Quicken Mac performance, unless you have a lot of attachments.
