Saving and opening a mapped view loses the architecure info

[xusheng6]

Repro:

1. File -> New Mapped Data
2. Select windows-x64_64
3. Save the database
4. Re-open the database
5. Observe the arch becomes x86

[xusheng6]

This breaks the workflow of using the debugger without opening a binary view pretty badly

[xusheng6]

oh it might be related to the fact that there is no functions in it?