No, it's not that easy. The brood nest typically has a structure and order to it, there is a method to their madness. Typically the center of the broodnest consists of the smallest cells, with the cells graduating in size as the frames reach towards the outer edges of the box. It is imperative to feed the smallest cells into the center to maintain this structure. Don't just interchange the unused frames and throw them all back in like a shuffled deck of cards.
Here is an excerpt I wrote in response to another keepers questions regarding feeding in foundationless frames to encourage them to downsize those cells.
Here is the top view of a 10 frame box, of the first stage in regressing your bees.
[Drawn Foundation]
-[Foundationless]-
[Drawn Foundation]
-[Foundationless]-
[Drawn Foundation]
[Drawn Foundation]
-[Foundationless]-
[Drawn Foundation]
-[Foundationless]-
[Drawn Foundation]
Position the frames containing the smallest and most uniform cells in the middle, make sure frames containing a large amount of honey and drone comb are on the outside of the box. If there are full frames of honey, put them in the top super to bait them up.
After those foundationless frames are drawn, take the largest cells, whether it be the frames that are on the outside now, or two of the foundationless frames just drawn, and put them on the outside of one of the top boxes. Spread the gap in the middle of the box, it will now look like this, if you only took the two out side frames.
-[Foundationless]-
[Drawn Foundation]
-[Foundationless]-
[Drawn Foundation]
[Drawn Foundation]
-[Foundationless]-
[Drawn Foundation]
-[Foundationless]-
Analyze the cells to determine which are the smallest, and whether or not the cells are smaller than the drawn comb in the center of the brood nest. If they are smaller, they get positioned in the middle. If not, push the two previously drawn frames back to the middle and insert another foundationless frame on either side of these. Determine whether or not you have two more frames that need to be moved out in order to make room for smaller cells.
When inserting foundationless frames it is critical to make sure this frame is flanked with nice uniform comb and not wavy frames. And make sure the end bars are tight against each other to achieve the most straight and uniform foundationless comb.
As you are going to be acquiring smaller cells, you may want to modify your end bars as Michael Bush has suggested. The cell depth is directly proportional to the diameter, when it comes to rearing brood, so as we get frames of smaller cell comb drawn, the center to center frame distance will no longer need to be 1-3/8". Michael has suggested shaving 1/16" off each side of the end bar which will give you an end result of 1-1/4" center to center spacing of your frames. If 10 frames are modified in this manner you now have enough room to fit 11 frames in a ten frame box. And with this method you can now insert a foundationless frame into the exact center of the brood nest in the above examples. This method has worked very well and seems to help encourage the drawing of smaller cells.
Whatever you do, I would not suggest condensing the foundationed frames in the middle of the brood nest if you are trying to regress your bees. This will defeat the purpose, as the colony seems to graduate the size of cells from smallest to largest, starting in the center of the brood nest.