Answer: Sometimes transplanting can stress a plant enough to exacerbate some other underlying problem that you might not have been aware of. Other times, the transplanting process may cause just enough root damage that there is not enough water moving through the plant to support the foliage when the plant is fully leafed out. Wilting can however signal over or underwatering. You will need to check the soil with your fingers and make sure that the soil is moist but not sopping wet as roses require good aeration in the soil and thus need "good drainage" with moist soil rather than a soggy soil. It is also possible that the soil match between the original soil and the new soil is not very close and that they drain at different rates, this could also affect the watering needs of the plant until the roots grow out into the new soil. I hope this helps you trouble shoot.
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