Question about the disappearance of data

### Checks

- [x] I have read the Wiki, searched the open issues, and still think this is a new bug.

### Explain the problem clearly and succinctly:

Since Last march 2026, it has come to my attention that several of my data inside my .kdbx suddenly disappeared. I first, noticed this when the final v4.0 was released, I have installed the beta version of 4.0 before that so I assumed that maybe the beta version is not stable.

Now, when I tried to open my standard notes account, i have failed as it is not there. The same when I tried to login to my ente, electricity bill account and Proton. It seems like random data inside the database is suddenly disappearing.

What could be the reason behind it? I have the recycle bin turned on since the very start, so when i delete something, I can just recover it. But in this case, there's no record both on the database list and recycle bin.

Luckily, I have backups so I managed to copy 4 of the lost data that I noticed (hopefully its the last ). Ironically, I have used my March backups to copy the lost credentials

### Describe what you expected to happen:

Retain data as is for the months and years to come unless intentionally deleted.

### KeePassDX version:

V4 +

### Build:

Libre

### Database version:

_No response_

### File provider (`content://` URI)

_No response_

### Android version:

_No response_

### Android device:

_No response_

### Additional context:

_No response_

Start by comparing the affected .kdbx database with the March backups, including the database list and recycle bin, while reproducing the report on KeePassDX V4+ Libre. Collect the missing database-version, content-URI, Android-version, and device details; done means establishing a reproducible cause for entries disappearing or identifying the evidence needed to continue investigation.

Written by the indexing model from the issue text.