Project Calendar Dates Getting Removed

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I don't know of a particular way to make the problem occur.

I go about using GanttProject (adding/deleting/editing properties) throughout 
the day. I go into Project Calendar and notice some of the One-off dates I've 
added are now gone. I add them, but after a number of edits on tasks, dates 
keep getting deleted off the Project Calendar

What is the expected output? What do you see instead?
I expect One-off/Recurring dates to remain.

What version of the product are you using? On what operating system?
2.7 Beta IV (build 1820)

Please provide any additional information below.

Original issue reported on code.google.com by carlom.i...@gmail.com on 9 Dec 2014 at 12:37

• Merged into: #1037

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Original comment by dbaras...@ganttproject.biz on 9 Dec 2014 at 12:50

• Changed state: Duplicate