Exchanges that support the Karura network and the KAR token would support direct withdraw/deposit KAR to/from Karura network. Please confirm with your exchange on how to send KAR tokens to the Karura network. Typically, users are asked to enter the Karura account on the Karura network where'd they like to receive their KAR. Karura addresses always begin with a lower case letter (e.g., a, d, m, q, etc.). Here's an example of a Karura address oVhzuixfFEdg2JRjFfPRxzgcSrddnst3UvTpu4Zcn1KCpAn.