多工计时器-倒计时器-计数器

Invalid date

Fixed:
1. Fixed the crash caused by the loss of interval timer or step-by-step timer data during data import.
2. Fixed the issue of inconsistent number of panels chosen and actual exported when exporting data.
3. Fixed the issue of inability to import exported data normally (the problem occurred between versions v1.2.5~v2.3.0), data exported from these versions can now be imported normally in the new version.