Do the non-roofed courts move to roofed courts mid-match if rain all day

[Snowball]

What happens to the three courts with no roofs who
can't play in the rain, do they move matches or suspend them ?

[DR225]

I didn't think they had any roofed courts, which is why there wasn't any play yesterday (besides the matches completed before the rain).

[Snowball]

there are 3 matches in ATP and 3 matches in WTA that are interrupted
and have been for hours. Meanwhile, others play.
So do these matches resume on a playable court as the playable courts
are freed up, or do they start new matches on the playable courts ?