I've a camel route which looks like below

```java
from("activemq:queue:upload" )
    .pollEnrich().simple("file:basePath/${header.ID}?noop=true&recursive=true")
    .aggregationStrategy(new ExampleAggregationStrategy()) 
    .timeout(2000) 
 .toD("ftp:${header.destinationURI}")

```

In my file system `file:basePath/${header.ID}` contains multiple folders. When above route is executed, only 1st file from the 1st folder will be copied to ftp server. Remaining folders(with subfolders) aren't getting copied to ftp server!

And `ExampleAggregationStrategy()` class's `aggregate()` method looks like below

```java
@Override
        public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
            String destinationURI = "populatedURI";

        oldExchange.setOut(newExchange.getIn());
        oldExchange.getOut().setHeader("ID",  oldExchange.getIn().getHeader("ID"));
        oldExchange.getOut().setHeader("destinationURI", destinationURI);
        oldExchange.setFromEndpoint(newExchange.getFromEndpoint());
        oldExchange.setFromRouteId(newExchange.getFromRouteId());

            return oldExchange;
        }

```

I've tried setting `properties and onCompletions` as well. Still no luck !
Am I missing anything in `aggregationStrategy` ?  

How to copy all the files and folders successfully using `pollEnrich`?