IMR is right, IF you had it in Rose, it is not going to just "fall out", If you meant you wanted to check Rose for something, such as Probe RB, then you would not leave it in Rose other then to check her, or if you had a skit like IMR has done, so when done you would take out. I try to keep myne in their original plastic containers or in the camera case I keep my camera in, and because I take so many videos and photos, I have at least 8 SD cards but only about 3 micro SD cards that would fit into Pleo rB.
Each SD card or Micro SD card has a small label on it so I know what they are. I can't use each one over and over, cause I don't want to keep downloading the different skits, Probe RB or STATS RB, etc. I only keep one micro SD card permanently in one Pleo Rb, Cammie -Sue, and that is because she had a operating system problem over a year ago, and with the help of PleoPet, keeping a micro SD card in her and NEVER taking it out is the ONLY way she will operate. AS soon as I remove it, she goes dead.
None of my other Pleo RB ever keep one in them except for temporary downloads, etc. Because micro SD cards are so so tiny, it is easy to lose them unless you have a safe place to store them. Good luck finding it.
RWM
