How to move all files from a directory(including subdirectories) to a specific directory without subdirectories in target using camel route over FTP?

As I am very new to Apache-Camel, I stuck with a use case.
I want to achieve moving of all files to a specific directory without sub-directories in target using camel route,

for example-

SourceDirectory/file1.xml
SourceDirectory/subDir1/file2.xml
SourceDirectory/subDir2/file3.xml
SourceDirectory/subDir3/subDir4/file4.xml

should be moved to a destination Directory

destDir/file1.xml
destDir/file2.xml
destDir/file3.xml
destDir/file4.xml

The code below copies file including all sub-directories to destination

String src="ftp://username:password@host/srcDir/";
String destDir="ftp://username:password@host/destDir/";
fromUri = src+"?recursive=true&delete=true";
		
from(fromUri)
.to(destDir);

To achieve this currently I am using ftp client

private void moveOverFTP(String from, String to) {
		FTPClient ftpClient = new FTPClient();
		try {
			URL url = new URL(from);
			String[] info = url.getUserInfo().split(":");

			ftpClient.connect(url.getHost());
			ftpClient.login(info[0], info[1]);

			String srcFolderPath = url.getPath();
			String targetFolder = new URL(to).getPath();
			move(srcFolderPath, targetFolder, ftpClient);
			
			ftpClient.logout();
		} catch (IOException e) {
			logger.error(e.getMessage(), e);
		}

	}
	
	private void move(String srcFolderPath, String targetFolder, FTPClient ftpClient) throws IOException {
		FTPFile[] files = ftpClient.listFiles(srcFolderPath);
		for (FTPFile file : files) {
			String fileName = file.getName();
			if (file.isDirectory()) {
				String tempSrcPath = srcFolderPath + fileName + "/";
				move(tempSrcPath, targetFolder, ftpClient);
				// delete empty directory
				ftpClient.removeDirectory(tempSrcPath);
			} else {
				System.out.println("Moving "+srcFolderPath + fileName +" to = "+ targetFolder);
				ftpClient.rename(srcFolderPath + fileName, targetFolder + fileName);
			}
		}
	}

Any help to achieve this in route itself would be appreciated!
Thank you in advance!

Sounds like what you are looking for is the flatten option, ie.:

from(fromUri)
  .to(destDir + "?flatten=true");