As per title, I have recently visited country B with
- my passport of country A, which they did not stamp, and
- an entry permit, which they stamped
I don't want to forget this trip in case sometime in the future I need to fill in a visa application that requires (say) 10 years of travel history. To this end, am I allowed to
cut out the stamp and attach it (e.g. gluing or stapling) to an empty location on my passport?
The question is not the same as Am I allowed to glue my vaccine card to my passport? because this is an official entry stamp given by a border official, rather than something irrelevant to immigration.
There is no guidance on this on country A's government website and in fact citizens of country A don't tend to use the passport to enter it (there is another more convenient form of identification). So the main concern is getting in trouble with other governments and airlines.
The entry permit is just something I printed before the trip on a piece of A4 paper. It is useless now so I don't manage destroying it. Thank you for your advice.
Edit:
Thank you for your advice. I remembered I already have a spreadsheet for travel information from last time I needed them. I'll simply
- update that spreadsheet, and
- keep a scan of the entry permit in case I lose it.