Why did my settings change when I duplicated my ad set to a different campaign?

When duplicating an ad set to a different campaign, some settings will not be duplicated. This includes the following scenarios:

• Ad sets from a non-App Install campaign cannot be duplicated to an App Install campaign.
• Lead Gen Forms from a Lead Gen campaign cannot be duplicated to a non-Lead Gen campaign.
• Target CPAs will not be duplicated into a campaign with a Traffic objective. This is because Traffic campaigns optimize for impressions and clicks, not conversions.