[Rseding91] [0.16.12] "Play" does not use displayed Map Preview Seed

[IronCartographer]

After a map exchange string is entered, and the Preview generated, the Regenerate button will change the previewed seed, but Play will ignore the new (currently being previewed!) seed and use the original from the exchange string instead.

Steps to reproduce:
1. Paste exchange string
2. Generate preview
3. Regenerate
4. Play

Expected behavior:
A) New, previewed seed overwrites the original exchange string's seed, while the rest of the settings are kept intact.
or B) Regenerate button has no lasting effect, and is therefore disabled in the presence of an exchange string specifying the seed.

[Rseding91]

Thanks for the report. This is now fixed for the next version of 0.16.