@Deryll I can also add one small warning- The first year after moving a keeper, they almost always rebel. Scapes will be shorter, and flowers might not be as plentiful. Some plants might even take until the second year to recover.
Generally, that should be expected. Moving a plant usually includes breaking or cutting roots and leaves. The plant has to replace everything it loses in the move. Resources used to replace the lost roots and leaves are stored in the roots. Plants will be setback by the move. How much they are setback and for how long depends on how they were treated before the move and how they are treated after the move. It will also depend on how much damage is done to the roots and leaves in the move. Providing the plants with luxurious (optimum) growing conditions (water, fertilizer, weeding, etc.) both before and after the move should reduce any setback that might occur.
Sometimes taking until the second (or third) year to recover from a move is not unexpected. That would be considered to be a carry-over effect (meaning it carries over from one year to the next). Perennial plants, e. g. daylilies, may have some characteristics that are more affected by the previous year's environment than the current year's.
Some plants with huge flowers and well branched scapes on a young seedling might be totally different as the clump matures.
This is unexpected. Normally a seedling must grow to a certain size before it can flower. When it reaches that size it is able to flower but usually the number of the flowers, the characteristics of the scapes, possibly the size of the flowers, etc. will not be the most that the plant can produce. That is because although the seedling may have reached a size at which it can flower it usually has not reached its maximum possible mature size. The seedling may be able to grow larger. Usually a plant's flowering characteristics are affected by the actual size of the plant not its age (and quite possibly on how much resource material the plant has stored). So as the plant becomes larger than the threshold size at which flowering occurs, the number of flowers, scape branching, etc. is expected to become greater.
If the seedling matures to a clump with a number of fans and there is a noticeable difference (poorer) in the flowering characteristics from those it had as a younger seedling (fewer fans, perhaps just one) that suggests that self-competition has affected it strongly. That may mean that the particular seedling is more affected by competition than is usual.
