Not all Place parts appearing if certain dates chosen

[DaveSch]

With the question mark showing (?), Gramps is saying there is no valid name for the event’s date. The entries in question are the Name and Alternative name entries with their date information.

What are the limits for the Date sort value?

There was an earlier thread about posting B.C.E. dates. The key was putting a negative number in the date editor. I did an additional test using the year -100000000000. The resulting entry was 9999 B.C.E. Obviously, there is a limit. With another entry 6666 B.C.E. (entered with the date editor) and then the events sorted by date, 6666 B.C.E. was sorted first before 9999 B.C.E.

Entering the date ranges using the Date editor may solve the issue if Gramps is having problems with dates entered as text.