[2.1.13] Editing a single occurrence of a recurring transaction may end the series

There seems to be an issue when modifying the date of a single occurrence in a recurring transaction series. Instead of keeping the original series intact, the recurring transaction may unexpectedly stop.

Steps to Reproduce:

1. Create a recurring transaction set to repeat monthly (e.g., on January 28).

2. Navigate to the "Scheduled" view and change the date of the next occurrence (e.g., move the March 28 transaction to March 27).

3. Select "Only this one" to modify just this occurrence.

Expected Behavior:

• The transaction series should remain intact, with the next scheduled transaction still appearing on the original recurrence date (e.g., April 28).

• The modified transaction should be treated as a one-time exception while future transactions continue as scheduled.

Actual Behavior:

• The original series appears to be terminated, and only the manually modified transaction remains.

• Future transactions do not generate as expected.