Checking out for a secondl evel, the original levels "Expiration Date" will appear in emails.

[kimwhite]

Describe the bug
When a User purchases a second letter, their email will show:
"This membership will expire on xxxx" and will show the date of the original level.
This happens even if the second level has no expiration date.

The actual account is correct.

To Reproduce
Steps to reproduce the behavior:

1. Checkout for 1st level with an exploration date.
2. Checkout for 2nd level that has no expiration date or is different on the first
3. Look at checkout email. The date from the 1st level will show on the 2nd level's email.

Screenshots

Expected behavior
Show the correct Expiration date. or none.

Isolating the problem (mark completed items with an [x]):

• I have deactivated other plugins and confirmed this bug occurs when only Paid Memberships Pro plugin is active.
• This bug happens with a default WordPress theme active, or Memberlite.
• I can reproduce this bug consistently using the steps above.