I recently replaced my cache at Princetown and had a similar problem. When I originally placed the cache it was a good sized container with an A7 memo pad for a log (which cost £2.00 if I recall). This cache was later reported missing, so I went and replaced it with a smaller pot containing a film pot log inside.
When I did my maintenance visit I discovered that the original hadn’t gone missing after all, but even more oddly, the memo pad had been taken from the first cache and loose A4 paper left inside, and the film pot had gone missing from the second cache!
