Enemy minefield indicator that won't go away

I'm playing a game on PBW where I discovered, and swept a couple of enemy minefields which were marked with the normal blue square with the "M" in the bottom right corner. I know now these minefields are clear (they've been swept, and ships regularly move through them without exploding). But the minefiled indicator square won't go away, and my ships were rerouting themselves to avoid the so-called minefields; and as one of them is on a warp point, that gets a bit annoying.

I can change this behaviour by un-ticking the relevant box in the Empire options - but then of course I run the risk of accidentally routing ships through real minefields.

Is there any way of solving this?

Mark

P.S. The game was running 1.67 when the problem first appeared, and is now upgraded to 1.78.

[Suicide Junkie]

If you have a ship move specifically into that sector, will it clear? Move a minesweeper ship into that square maybe?

[Fyron]

Hit Ctrl-R and select the sector. This clears minefield indicators. Ctrl-T can add them wherever you want.

[Ed Kolis]

There ought to be buttons for those commands... Get rid of the buttons for some of the commands that were never implemented and put those in, nobody ever remembers them!

[geoschmo]

I am pretty sure you can also get rid of the marked minefields by specifically giving your sweepers the "sweep" command and directing them to that sector. But it's been a while. I usually use the hotkeys.

Geoschmo

[DocShane]

I had this same problem arise in a 1.67 game with Fyron. I had a minefield as the Borg and a minelayer populating it. The Ferengi caused a crew insurrection and then completed laying mines. I could not get that indicator to go away, even after sweeping the field of enemy mines. This creates a nusance using waypoints, as ships would avoid this otherwise safe space just because of the minefield marker. I just accepted it as a bug. Guess MM ought to know.