Unable to Import Let's Encrypt Cert in to IBM ikeyman GUI for Managing IBM .kdb

also have a look at page 41 of this document http://www-01.ibm.com/support/docview.wss?uid=swg27036662&aid=1

I believe it’s a formatting issue that you are experiencing

http://www-01.ibm.com/support/docview.wss?uid=swg21283831

Andrei