I set them as is. I have browsed the site using Fiddler and I'm capturing the output from Fiddler. When I review the headers, this is what I see in the cookie header:

Cookie: optimizelyEndUserId=oeu1411691125629r0.670045307604596; access
+_token=4e92a468ae3d022d72d177f4b018333131a904ab; lastLoggedInDate=09%
+2F26%2F14; PHPSESSID=dtdfb3b4v8vm16uml1ro7lf38ktu6ote; jwplayer.volum
+e=90; locale=en_US; optimizelySegments=%7B%22306102099%22%3A%22gc%22%
+2C%22306155008%22%3A%22direct%22%2C%22306161004%22%3A%22false%22%7D; 
+optimizelyBuckets=%7B%7D; __ssid=883bcda6-f5e9-41de-b9fb-576453cc4c6c
+; optimizelyPendingLogEvents=%5B%5D; _mkto_trk=id:273-CKQ-053&token:_
+mch-.com-1411691127927-21192; __utma=1.1403134398.1411759895.14117598
+95.1411759895.1; __utmb=1.1.10.1411759895; __utmc=1; __utmz=1.1411759
+895.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __uvt=; bounce
+ClientVisit858v={"r":"https%3A%2F%2Fwww.com%2Fhome%2Fmy-courses%2F","
+lp":"https%3A%2F%2Fwww.com%2Fserver-2012-exam-70-410-tutorial%2F%23%2
+Flecture%2F1249780"}; uvts=282anRcS5hWaWQdg; _bt_id.BT-22382467-3.d38
+9=b5822f6f5d117584.1411691130.2.1411759896.1411691169.; _bt_ses.BT-22
+382467-3.d389=*; __ibxt=dXRrXzU0MjRiMjc4NWQ2MjYxLjA5NjQyMjA0; bounceC
+lientVisit858={"v":{"ever_logged_in":true,"language":"en-US","em_conv
+_bool":"1"},"fvt":1411759894,"vid":1411759894484985,"ao":0,"as":0,"vp
+v":1,"d":"d","lp":"https%3A%2F%2Fwww.com%2Fserver-2012-exam-70-410-tu
+torial%2F%23%2Flecture%2F1249780","r":"https%253A%252F%252Fwww.com%25
+2Fhome%252Fmy-courses%252F","cvt":1411759894,"gcr":45,"m":0,"lvt":141
+1759894}; ki_t=1411759896169%3B1411759896169%3B1411759896169%3B1%3B1;
+ ki_r=; __uvstr=d9b4984a7ad2bfee5fabe70a9c25819a; __uvst=5409ce8fb5a7
+a5787a65c95ca76ee4b9
[download]

So they appear to be $key/$value pairs and I'm attempting to reconstruct that. If i can find a way to save the cookie file and then just import it into the jar, that would work too. But when I tried that, the LWP module complained that the cookie wasn't formatted properly.