The warning changes are not being captured may be caused by 2 things:
Reason 1
Valid scenario, where parent/log stream tasks actually did not receive any data from the source, for example, if the changes currently happening on the source are not related to the tables in the task. You can confirm this by verifying that there is no data discrepancy between source and target.
Reason 2
Error scenario, where parent/log stream task encountered an issue and parent/log stream task continues to run without throwing an error. Check the staging task if there is an error during the same time frame when you received the warning on the replication task. For example, the staging task has stopped writing data to the log stream files for some reason.
For the second scenario, please open a support case for assistance.
Environment:
Qlik Replicate