Help!/Reconciling accounts.

So basically, in 2007 when I first joined the Tardis Wiki, I didn't realise that accounts set up on one Wikia were global across Wikias, and so I made an account on the Tardis Wiki under the name Sichamousacoricothingmabob (I was 12, don't judge me!). I soon realised that the accounts were in fact global across Wikias. Despite that, I still used the account I set up for the Tardis Wiki for all my edits on this Wikia, and I used Imagine Wizard for everything else. What I am wondering (and this is probably something I should've asked six years ago but whatever) is does anyone have the power to sort of combine my accounts - basically so all the contributions I did under the account I set up for this wiki are now attributed to this account instead - so that, essentially, I can just use this account for everything, but I won't have lost the continuity from that account. (To clarify, I set up the 'Imagine Wizard' account on another Wikia before I joined the Tardis Wiki, and THEN I set up the Sichamous account on here before realising that my Imagine Wizard account also existed on here.)

Thanks very much.