The message received below followed my importation of a file from Kucoin. However all these withdrawal transactions are supported by the Kucoin deposit file which was also submitted.
Wallet: KuCoin (KuCoin)
Transactions: 875
Imported with: CSV
- 25 transactions are missing purchase history
---- Missing 3003.39 CRPT between 2019-08-18 18:14:08 UTC and 2020-02-19 01:39:00 UTC
---- Missing 1697.16034322 POWR on 2019-01-14 23:01:22 UTC
---- Missing 21448.4 VET between 2018-09-23 13:28:58 UTC and 2018-09-29 00:32:41 UTC
---- Missing 3102.3100001 WAXP on 2018-06-18 01:28:18 UTC
---- Missing 19.986 GAS on 2018-06-15 22:55:50 UTC
---- Missing 64540.0 GO between 2019-10-04 15:20:15 UTC and 2019-10-08 11:57:55 UTC
---- Missing 2824.170162 ALGO between 2020-02-24 15:13:03 UTC and 2020-02-24 23:13:00 UTC
---- Missing 1613.94143582 LOKI between 2020-01-19 17:56:53 UTC and 2020-01-20 01:56:53 UTC
---- Missing 9958.9998003 WPR on 2018-07-09 14:23:17 UTC
---- Missing 12889.729 SOLVE between 2019-10-18 22:53:59 UTC and 2020-05-27 22:37:52 UTC
---- Missing 25.11266884 ETH between 2018-08-15 22:38:36 UTC and 2020-03-31 22:55:08 UTC
---- Missing 11417.0 ENJ on 2020-03-20 01:02:39 UTC
---- Missing 245.5 XTZ on 2020-06-26 02:25:56 UTC
---- Missing 248.995 ATOM on 2020-06-26 00:00:37 UTC
---- Total gains due to missing cost basis: 6304.4 GBP