Re-arranging the MS/elder population was/is the norm in my ex-congo. Always sending in a new P.O., COBE, TMS Overseer, Elder, MS, pioneer couple, etc. It was a small backwoods congregation with one slightly wacky "annointed", now deceased. Attendance low, hours below the national average, obviously little effort in "studying for the meetings" and commenting, pioneer couples sleeping with each others "marriage mates" (hate that term, sorry) and getting DF'd, "apostacy", and faders abounding. They sold the hall off and now meet a good hour away for the outliers in the territory.
Currently possibly one elder actually lives in the territory. My ex-congo is still more relaxed and less legalistic than the now "sister" congo, so the "increase" is from families migrating over from the stiff, New England congo. They even had to recalculate the congregation contributions toward the operating budget. Sending in the big guns hasn't changed the local dub population much. If anything, the heavies soften a bit over time or leave in frustration.
Just my observatios locally.