Rather than deleting a breakpoint you might prefer to "disable" it. This makes the breakpoint inoperative as if it had been deleted, but remembers the information on the breakpoint so that you can "enable" it again later.
To disable/enable an existing breakpoint
In the Debug Object manager dialog on the Breakpoints tab clear/check the breakpoint you want to disable/enable
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In the Debug Object manager dialog on the Breakpoints tab select the breakpoint you want to modify and click the Modify button. The breakpoint dialog appears. In the breakpoint dialog check/clear Disable the breakpoint.
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Double-click the dot in the selection margin next to the line containing the breakpoint you want to disable/enable. If the color of the dot was red, i.e. the breakpoint was enabled, it becomes gray, i.e. the breakpoint becomes disabled. And vice versa, if the dot was gray it becomes red after double-clicking.