remove all items from remapped sets since we cant backfill them anyway

main.go

@@ -269,9 +269,9 @@ func (that *Offloader) Do() {
 					log.Printf("unable to scard %s: %s", key, err)
 					continue
 				}
-				if scard > watermarkHigh {
+				if scard > watermarkHigh || (k != q && scard > 0) {
 					spopLimit := scard - watermarkHigh
-					if spopLimit > batchSize {
+					if k != q || spopLimit > batchSize {
 						spopLimit = batchSize
 					}
 					ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)