Possibly a glitch or bug while putting troops in war cc

M daily player of COC and taking part in war too.. Today i noticed while filling my clan's castle with level 3 dragons that if i will put level 3 drag and if i will check back then i will see there are level 4 dragons. I don't know why its showing level 4 when i put level 3..Its not like that some one put but i just checked back after putting drag in cc. So is it any glitch or bug? and what will come if some one will attack them?
I will check replies when war will start and share but just curious to share or to ask..Hope i won't get any negative marks for asking this question as m always getting negative marks no matter whatever i ask so please be human and help or solve my query..
Thank you
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How do you lure CC troops in war?
Luring the Clan Castle Troops (if you do, that is)Do you lose CC troops on defense?
After a war attack is over, the defending Clan Castle troops that were defeated are automatically replenished. This means that the same Clan Castle troops will defend a War Base against every war attack.How do I put troops in my Clan castle?
You can do this by tapping on the "Request" button at Clan Castle, or the Barbarian button at the bottom of the Clan Chat. You can use these donated troops for: Attacking and defending in Multiplayer. Attacks in Clan Wars & Clan War Leagues.How do CC troops come out?
When weaker troops come out of a Clan Castle, wait till they are fully lured out and then use a Lightning Spell or Poison Spell to get rid of them.Best Clan Castle Troops for Every Town Hall Level in Clash of Clans!
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Images: Michelle Leman, Pavel Danilyuk, Veronica Chavarria, Veronica Chavarria