The short answer is "it depends"
The longer answer is "it depends on how burnt it was"
Allow me to explain a bit.
When you burn the head on something it's caused by a lack of juice mostly. When you push the button the coil gets hot. Under normal circumstances the coil gets hot enough to easily burn e-liquid, BUT, the wicking of liquid onto the coil combined with the airflow around the coil cools it down and this stops the liquid burning (much)
If you have a cup of tea and blow on it, it cools down. Imagine you've got a really hot saucepan on the stove and you put it in the sink and poor cold water on it, it cools down too, quite quickly.
This is what the e-liquid and you sucking does to your coils. Left to their own devices they'd get to several hundred degrees and start glowing orange, but keeping them wet with liquid and having air flow around them keeps them cooler.
So if the wicks dry out too much and the coil doesn't get cooled enough it burns.
If you burn it really badly, or if you burn it and let the juice sit next to the burnt coil long enough then the juice will dissolve some of the burnt gunk, it'll go a darker brown and it'll taste burnt forever more.
If you haven't burnt it that badly and you shift it to a new tank quickly then it'll be fine.
'Normal' e-liquids, as in the ones that have VG/PG/nic and flavourings are harder to burn. If you use an e-liquid that has natural flavours or a steeped tobacco then those burn a lot easier because of the presence of natural sugars (which burns at a much lower temperature than the rest of the e-liquid) so you need to be more careful with those juices.