How to delete CTS project?

Hello Experts,

I have 3 CTS project in my 'managed system',

ChaRM is using only one of them. 2 others seems to be left by other people, so I want to delete them.

The problem is: these 2 CTS projects are not visible (available) from SPRO_ADMIN transaction neither from SPRO transaction, there is only one CTS project available - it's mine,

But these 2 are available in CTSPROJECT table and visible via transaction SE01, so transport requests can be created for these 2 CTS projects (outside the ChaRM), and I can't stop occasional creation of TRs in my 'managed system'...

How I can delete these 2 CTS projects, is any procedure for this? Can I delete these 2 directly from CTSPROJECT table?

Thanks in advance,

MM