The most common and most likely answer to this crossword clue is the 10 letter word SPELLBOUND
I've seen this crossword clue in The Guardian
S
P
E
L
L
B
O
U
N
D
More clues leading to the result SPELLBOUND
- Bewitched for a short time? Sure
- Entranced by time before spring
- Time for skip to be transported
- Captivated, as J, U, M and P do
- Certain, after short period, to become enthralled
- Time limit for having one’s attention held
- With interval over, sure to be enthralled
- Write letters in spring for 25’s work
- Experiencing charm of spring after short time
- Captivated in spring time — contrariwise
Buddy explains!

The straight part
We know that "transported" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case transported = spellbound.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SPELLBOUND mean?
SPELLBOUND adjective- Fascinated by something; entranced as if by a spell.